HMU 397A Orchestration


Class Notes 8a

Introduction to Brass Instruments

Please note: All references to "Adler Movie" and "Adler Audio" can be found on
Six Enhanced Multimedia Compact Discs for The Study of Orchestration
A copy will of this CD set will be available for checkout at the multimedia lab.

All other items can be found in zip file on index page








Origins of Brass Instruments

Orignially the brass instruments were not intended for the orchestra and were not really composed for.  They were quite unwieldy things and had very little standardization between instruments. Originally they were used as

1.  Calls for the hunting
2.  Notificiation of public announcements (ie civil disasters)
3.  Military Functions




Standardization of Brass Instruments

It wasnt until the 19th century and the advent of the "crook" and "valve" system (see below)  that the instruments became enough standardized to occupy a place in the orchestra.  The early orchestral brass instruments were mechanically different instruments and had a different set of limitations than the modern instruments we use today.  In general, brass players today can equal the agility and versatility of any of the other orchestral players.

The brass choir tends to be loud.  At full force they can easily obliterate the entire orchestra and they can not be expected to play as softly as the strings and winds.

Brass Classification (in score order)

   a.  Horns in F :  No doubling but classified as "high note" players and "low note" players

   b.  Trumpets:   Bb and C most common. Doubles on Piccolo, D, Cornet, Flugelhorn

   c.  Trombone:   Tenor most common.  Doubles on Alto and sometimes Bass

d.    Tuba:   BBb& CC Tuba most common.  Also Euphonium

Brass Score Layout  brasslayout.pdf

"In 3's or In 2's"

 

With exception given to the French Horns (Horns) to whom we will always allocate 4 players and the Tuba to whom we will allocate one player (for now) The layout of the Brass within the orchestra can be determined by maintaining  each of the instruments in groups of twos or threes similar to the winds.  For example, if we have 2 Trumpets, it is common to have two trombones.  If we have 3 trombones, its common to have 3 trumpets.  As well the brass allotments will often follow that of the winds.  If we have winds in 3's it is common to have brass in 3's.  A typical orchestra with winds in 3s will thus have: 4 French Horns, 3 Trumpets, 3 Tromonbes and 1 Tuba. 

 

The Principle of Transposition

As we saw with wind instruments like the Bb Clarinet and the Alto Flute, The Various Trumpets and French Horns are transposing instruments.  In Orchestration I you may write in concert so that the note you write on the page is the note that the instrument sounds.  Be careful when reviewing the instrument ranges that you are always referring to the sounding pitch. However, as with the winds YOU MUST PRESENT TRANSPOSED PARTS TO THE PLAYERS

Note:  Adler states that Horns and Trumpets read without key signatures and their parts simply contain all necessary accidentals.  Whereas this may be true in certain circumstances, it is becoming increasingly accepted that these players also read key signatures.  We will use key signatures in all brass instruments.

Principles of the Harmonic Series and Natural Brass

Harmonic Series on Trumpet

We saw with the string instruments that each open string on each instrument actually contained many notes called overtones in addition to the Fundamental pitch we hear most.  By lightly touching a "node" on an open string, we could hear primarily the overtone created at each partial in the harmonic series.  Each of these "natural" harmonics produced a single note in the harmonic series of pitches above the fundamental.  (http://personal.stevens.edu/~abrick/files/HMU397_notes_02b.html)  We saw the same exact principal applied to wind instruments in which a wind player (i.e. flute) could "overblow" to create other pitches without moving any fingers.  (http://personal.stevens.edu/~abrick/orchestration1/files/HMU397_notes_06b.html)

The "natural" brass instruments of yesterday did not contain "levers".    The player would blow into the tube via a mouth piece and the fundamental tone would sound.  Just as a longer string on the Contrabass would create a lower tone than the shorter string of the violin, or the longer bore of the bassoon producers lower pitches than the the short bore on the piccolo, the longer the tubing of a brass instrument, the lower the fundamental tone it can produce.  By "overblowing" the tube, the player can expose the overtones above the fundamental.  Whereas we confined our string players to only 5 partials, natural brass players can safely execute 16 partials.


Natural Trumpet

The limitations to the natural brass instruments were
           1.  Fundamental hard to produce for beginners
           2.  Notes between partials were impossible to produce
           3.  Certain partials are very out of tune compared to our tempered scale  (Adler CD 3-32)

Click to view pictures of:
Natural Horn in F
Natural Tumpet
Natural Trombone

Crooks, Valves, and Slides

By the middle of the 18th century the limitation imposed by the natural brass had been overcome with the advent of a mechanism that allowed the trumpets to play notes outside of a single harmonic series.  By placing a "crook" on the instrument, the player could effectively change the length of the tubing and thereby alter the fundamental and the resultant harmonic series of that instrument.  Given time to place the "crook" on the instrument, the player could execute passages in almost any key.



Natural Trumpet with Crooks

Click to view pictures of early Trumpet  "crooks"

The placement of the crook took time.  Thus, if the music became very chromatic or contained frequent key changes, the crook system became inadequate.  By the early 19th centry the advent of the valve system emerged where additional tubing, permanently attached to the instrument could be employed by pressing a lever or piston to open a valve to that tubing.

Click to view pictures of:

Horn Valve System
Trumpet Valve System
Tuba Valve System

How Valves Work

The trombone is unique amongst the brass in its use of a slide.  Very similar to its 15th century counterpart, the trombone contains a U shaped slide that when extended, elongates the tubing and changes the fundamental and overtone series. 

Click to view pictures of:   Bass Trombone Slide

In addition to valves and slides, the brass instruments contain a tuning slide that will allow slight pitch adjustments as necessary.

Tone Production, Articulation and Tonguing

  Instead of using a reed to set the air column in motion, brass players "buzz" their lips.  Generally, the player will loosen the lips to create lower pitches and tighten them to create higher pitches.  It is important to note that the brass instruments require much more air and is much more physically taxing than the wind instruments.  The composer/orchestrator must allow enough time for breath and must not overwrite to a point of extreme physical excertion.



Phrasing

Like the winds, the brass will phrase all slurred passages in one breath.  It is very important to understand that without phrase markings, a brass player will articulate each note seperately and the resultant sound will be very detached.

Common Characteristics and Effect on all Brass

           1.  Sfz (Sforzando) and Fp (Forte-piano) Attack (Adler CD3-36)
                 Since the brass are capable of a great dynamic range and sharp attacks, these effects are extremely well suited.


           2.  Double and Triple tonguing for fast notes (Adler CD3-37-39)
                 Like the flute, since no reed is in the mouth, it is very common for the player to rapidly execute the syllables "teh-      keh" and "tuh teh keh" to produce quick notes.

           3.  Flutter Tongue (Adler CD3-40) Flutter Tongue

flz

                 Again, similar to the flutes, a brass player may roll their "r's" to create a growling sound.

           4.  Glissandi (Adler CD3-41)

gliss

                 a.  Lip Slur Glissandi.  (Lip Slut Glissandi Movie) (and a "rip" or lip slur on trumpet)
                 By quickly changing the embourchure, the player can produce the harmonic series very rapidly.
                 Since the first few partials are far apart, this technique is best reserved for the upper registers.


                 b.  Valve Glissandi.  (Valve Glissandi Movie)
                 By controlling a partial opening of the valve, the player can execute a Valve Glissandi


                 c.  Slide Glissandi.  (Slide Glissandi Movie)
                 By extending the slide in or out during a held note the trombone can execute a Slide Glissandi

           5.  "Hat" Accents (Hat Accent (Daggers) Movie)
                 Since the brass are capable of a great dynamic range and sharp attacks, this articulation is extremely well produed.

                 and has special meaning to a brass player.  One should review the table of accents from earlier in the semester.

           6.  Cuivre or "Brassy" (Cuivre Movie)
                 By forcing an extreme amount of air through the instrument, the player can produce a very agitated air column

                 resulting in a very "brassy "sound.

           6.  Mutes
                 A brass mute is a cone shaped plug that is inserted into the bell of the instrument.  Similar to string mutes it not only makes a more subdued sound, it greatly changes the color of that sound.  There are many different mutes for the trumpets and trombones and a mute that is available for one is usually available for the other.  As well there are different muting techniques for the horns.  Review all movies in Adler CD 3 thoroughly as well as the folloing movies:

"Wah Wah effect" with harmon mute
. "Wah Wah effect" with Plunger mute . Pixie mute with Plunger

 

 

String Articulations Wind Articulations Brass Articulations
     
Legato bowing Slurred (not tongued) Slurred MUST contain phrase markings
Detache bowing Articulated (tongued) Default playing with no phrase markings
Con Sordino Con Sordino Con Sordino of many types.  Straight, harmon, plunger, cup, bucket, solotone, whispa etc...

In addition to mutes and Exclusive to French Horns is the hand stop or "stopping" technique notated with + and o
Jete and Saltando (spontaneous Spicc) Double and Triple Tongue Double and Triple Tongue
Trills Trills Trills
Bowed Tremolo Flutter Tongue Flutter Tongue
Measured Tremolo Timbral Trills None really although trumpets can multi tongue very fast
Fingered Tremolo Tremolos rare
Harmonics (overblown) Harmonics Overblown "Cuivre" in horns and "brassy" in others
Glissandi Glissandi Valve Gliss, harmonic gliss, lip slurs, combinations, rips, and slide gliss
Pizzicato Staccato or "slap tongue" Staccato
Sul Tasto, Sul Pont Sub Tones, Hoots, Whistle Tones Niente, molto vib.
quarter and micro tones quarter and micro tones half valve microtone gliss and embochure bends.