Andy Brick, composer, conductor, symphonist


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01/27/06




HMU 397A Orchestration


Class Notes 3b

Plucked String 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



03bhomework: Worksheet 5 #s 1,2, & 3 Worksheet 6 #2  

LOOK AT THE ASSIGNMENT  Some of you did the entire worksheets in 02bhomework.zip when you didnt have to.  Im glad you did and encourage all of you to do the entire thing if you can but the homework assignment only requires those items I mention above  not the entire worksheet. 

Note:  Chapter 4 also covers Guitar, Banjo, Mandolin and Zither.  Time permitting, we will look at these in class.  You
are not responsible for these instruments on any exams or in any assignments. Instead, we will use the time for a final review of the string ensemble. 

The first quiz is just around the corner....  start thinking about what we have covered so far.....

Strings are THE most important single ensemble in the orchestra and you will want to know all the "on the string" and "off the string" bowings in Adler well enough to be able to identify and correctly notate the technique upon seeing it performed live or in video.  If I show you a passage in a score with a given marking, you will want to know what that marking means.  As well you will want to make sure you understand all technical aspects such as open strings, how to execute harmonics, identify impossible double or triple stops etc.  I may write an unmarked passage on the board and then articulate it by playing a synth sound.  I may then ask you to put in the correct phrase and articulation markings.  Remember we have slurs, accents, staccatos, wedges, hats.  If I explain verbally that the first half of the passage is to be played in a single bow you should know what making indicates that fact.    Dont forget the material from the first week with the orchestra seating chart and the construction parts of the string instruments. You will want to identify every player in the orchestra and give me relative balances.  If I say we have 16 1st violins you should be able to tell me how many 2nds, violas, celli and basses would be standard.  If I tell you we have 3 flutes, you should be able to tell me how many of all brass and winds we have.  Any specific questions about the solo string instruments will be derived from the video links on the HMU397_notes_03a.html webpage as well as the ranges of each instrument.  Remember my general rule... the top note of each string instrument is 15ma (2 octaves) higher than the highest open string on that instrument.  You will also need to know the correct clef for each string instrument including the Alto Clef for Viola and you will need to explain which of the string instruments is a "transposing" instrument and what that means. Today we covered the harp.  Again you need to know the construction and parts.  I will give you pedal diagrams without the letter representations and you will need to tell me which notes are sharp, flat or natural.  Or I may give you the letter names and ask you to write the pedal chart.    We may have lots of fun with examples that technically can not be played as written because of enharmonic problems and you may be asked to solve the problems with the fewest amount of pedal changes.  Same video rules will apply.  If I show you a video of a bisbigliando or a pres de la table or any other technique, you should be able to tell me what you are seeing and hearing and give me the appropriate notation.  You will not be asked to identify any technique via audio alone.  Until Orchestration II next semester, you will have the visual aid.   There will also be a more creative section where I might ask you to give me appropriate adjectives for the sound of certian playing techniques.  You need to start associating these sounds and colors and textures with things you already know in your mind so that you can call upon them in the future.  This is a great way to do that.  I may ask something like "describe the sound of Col Legno Battuto"  I hope you tell me something closer to wooden raindrops than to a hazy twilight.  There may also be a creative section of the quiz where you orchestrate a simple piano passage for strings and/or harp.  As long as its technically possible to play your orchestration, you will get 100% in this section.  However, I will be much more critical of your creative work in the quiz than in the homework as I try to open up your creativity. 

Orchestral Double Action Harp
(Adler Audio: CD 1-81-82)
Movie: Xavier.mov
Adler Movie: Harp.mov

Construction  (show images: discsa.gif, harp.jpg, harp_anatomy.gif, pedalsb.jpg, disksb.jpg, pedals.gif, harpb.jpg)











Made of wood and 47 steel and gut or nylon strings.  Main body is called the "Base" or  "boat" and the long downward sloping top of the boat is called the "soundboard".  The top of the harp is called the" Neck" or  "Harmonic Curve".  It has a brass plate that houses the action of the harp.  On the Harmonic Curve, There are two "Disks"  for each string which, via "Forks" are capable of changing the length of the strings and thus the pitch of the strings. Note:  the first two strings do not have discs and forks.   The hollow "Pillar" contains 7 rods which serve to rotate the discs and forks when the pedals are manipulated.   The pedals are housed in the "Base" of the harp.

Mechanism

  

Pedals (Adler Movie: harp setting pedals.mov)
http://www.mti.dmu.ac.uk/~ahugill/manual/harps/movies/pedals.mov
http://www.mti.dmu.ac.uk/~ahugill/manual/harps/movies/pedalsaction.mov

(Adler Movie: harp releasing pedals.mov )






When the pedal is in the top position neither disk is touching the string, and the whole length of the string vibrates and sounds in its lowest pitch, or "flat". With the pedal in the middle position the top disk is rotated, making the disk and its two posts turn to grasp the string. Thus the vibrating length is shortened so that the string produces a half-tone higher, or "natural" pitch. With the pedal in the bottom position both the upper and lower disks are activated, the string is made effectively shorter still, and it produces the "sharp" pitch. Thus, by moving pedals with my feet, one can obtain any of three different pitches (flat, natural, or sharp) from each of the strings on the harp.  Note the manipulation of the pedal will affect all strings of that pitch category for the enire range of the instrument.

From left to right the pedals are arranged:   DCB / EFGA 
(do cats bark?  Even felines get angry)

Pedal Notation

pedal notation
In most cases, it is important to give the harpist pedal indications.  The two methods to notate harp pedalings are:

  1. Letter representation:  Db C# B / Eb F G A
  2. Pedal Diagram  (show flat up, natural center, sharp down)

Note:  It requires very little time to change pedals.  Professional harpists can change pedals in a split second.

http://www.mti.dmu.ac.uk/~ahugill/manual/harps/movies/tiprepedals.mov

Enharmonics

  Since the pedal rotates the disc and fork of every corresponding string on the instrument, it is impossible to have mixed accidentals across the range of the harp.  Thus one could not write a D# and Db to sound simultaneously.  However, with that understanding, composers and orchestrators use enharmonics respellings such as Eb and Db to allow such executions. 

(Adler Audio: CD 1-80)

Range
harp range
Range of harp is Cb 0 to G#6.  (c3=mid)
It cover the entire modern piano except the bottom 3 notes and the top 4 notes.

Color

  In the lowest two octaves the harp is boldly somber, hollow and dark.  As it gets higher in pitch it gets lighter in character.  The middle two octaves are very rich and warm and the top two octaves are crisp and clear.  Towards the  top it can get a bit softer yet somewhat brittle and does not sustain well. 




Technique (Adler Movie: Harp Technique)

  The player uses only 4 fingers on each hand as the pinky is not employed.  Although the instrument reads on the same grand staff as the piano, the strings are closer together than the keys of the piano enabling the player to easily reach a 10th.  Chords are traditionally rolled unless marked by a bracket and composers can use wavey arrows to designate direction of the roll. 





About Harp Chords



(Adler Audio: CD 1-83-84)

Harmonics
harp harm

  Harmonics produce a beautifully soft ringing sound an octave above the designated string by touching a node while plucking the string.     It is also possible to get the 2nd partial producing an octave and a fifth but it is very risky and should be approved by the player.

  The best range for the harmonic is between A1 and F4 (c3=mid).  There are left hand and right hand harmonics and the player will decide which technique to use.  It is possible to play two harmonics simultaneously.





(Adler Movie: harp harmonics.mov )
(Adler Audio: CD 1-87-88-89)

Effects

  1. Pres de la table
    Playing the string near the soundboard = harder sound

    pdlt


    (Adler Movie: près de la table.mov)
    http://www.mti.dmu.ac.uk/~ahugill/manual/harps/movies/pdlt.mov
  1. Sons  Etouffes
    Dampen each note = secco, dry.  Must be slow enough to execute.
    (Adler Movie: sons étouffés.mov)
    etouffes


  1. Glissando
    Very idiomatic.  Must show pedaling.  Also possible in chords and multiple directions.  Notation can be straight line or curvy.
    (Adler Audio: CD 1-92)
    http://www.mti.dmu.ac.uk/~ahugill/manual/harps/movies/glissandos.mov
    gliss harp


  1. Trills and Tremolo
trills and trems vs. trill2

    1. A rapid alternation of the same note can be done on a single string - slightly more resonant. 
    2. Can be executed by enharmonically tuning two strings to the same pitch and playing with two hands.
      http://www.mti.dmu.ac.uk/~ahugill/manual/harps/movies/trills.mov
    3. A very soft tremolo or trill is called a Bisbigliando and can be executed with chords.  In  the score, t is called for by name.  (Adler Movie:  Bisbigliando)(Adler Audio: CD 1-93)
      http://www.mti.dmu.ac.uk/~ahugill/manual/harps/movies/bisbigliando.mov



Other Effects

  1. Knocking on the soundboard
  2. Fingernail plucking
  3. Threading the strings with paper or other objects
  4. buzzing the strings by playing then pedaling. 
  5. using a pick
  6. slaping  the strings for a gong effect.


http://www.mti.dmu.ac.uk/~ahugill/manual/harps/movies/extendedtechniques.mov