That's easy - be creative & follow the folk process.  In those vast files you mention, you'll find the likes of:

A conductor and a violist are standing in the middle of the road. which one do you run over first, and why?
     The conductor. Business before pleasure.

Move your capo down one fret and you easily get:

A choir director and an organist are standing in the middle of the road. which one do you run over first, and why?
     The choir director. Business before pleasure.

---

Conductor: "Start three measures before the da capo."
Principal violist: "Hold on! We don't have measure numbers."

Choir director: "Start three measures before the da capo."
Organist: "Hold on! We don't have measure numbers."

---

An Organist came home and found his house burned to the ground. When he asked what happened, the police told him "Well, apparently the choir director came to your house, and ..."

The organist's eyes lit up and he interrupted excitedly, "The choir director?   Came to my house?"

---

An American choir had just arrived in Europe for a two-week tour. One hour before the first concert, the choir director became very ill and was unable to conduct, and the choir suddenly had to find a substitute. The
choir manager asked everyone in the choir whether they could step in and conduct, and the only person who was willing was the last chair alto.

The manager was very nervous about this. "We can't audition you," he said.

"No problem," replied the alto.

"There's no time to rehearse. You'll have to do the concert cold."

"I know. It'll be all right."

The alto conducted the concert and it was a smashing success. Since the director remained ill for the duration of the tour, the alto conducted all of the concerts, getting rave reviews and standing ovations at each one.

At the next rehearsal, the director had recovered, and the alto took her place at the back of the alto section. As she sat down, her stand partner asked her "Where've you been for the last two weeks?"

---

etc.  Mind you, these and all the others are cheap shots.  I wouldn't tell them and am marginally embarrassed to admit I could even locate them.  The only really sophisticated one I found was an entry exam For The Notre Dame Cathedral Orchestra & Choir.  It was in the personnel file of a certain Quasimodo Kimmers

The pass mark is 10% but be careful--over 45% and you are overqualified.

  1. Who wrote the following:
          a) Beethoven's Symphony No. 6
          b) Fauré's Requiem
          c) Wagner's Ring Cycle
     [5 pts.]

  2. Tschaikovsky wrote 6 symphonies including Symphony
     no. 4. Name the other five.
     [5 pts.]

  3. Explain "counterpoint" or write your name on the
     reverse of the paper.
     [10 pts.]

  4. Which of the following would you tuck under you chin?
          a) a timpani
          b) an organ
          c) a 'cello
          d) a viola
     [1 pt.]

  5. Can you explain "sonata form"? (Answer yes or no.)
     [5 pts.]

  6. Which of the following literary works was made the
     subject of a Verdi opera?
          a) First among Equals -- Jeffrey Archer
          b) Macbeth -- William Shakespeare
          c) Noddy and Big Ears -- Enid Blyton
     [5 pts.]

  7. Domenico Scarlatti wrote 555 harpsichord sonatas for
     which instrument?
     [5 pts.]

  8. Arrange the following movements in order of speed,
     starting with the slowest first.
          a) Quickly
          b) Slowly
          c) Very Quickly
          d) At a Moderate Pace
     [4 pts.]

  9. Where would you normally expect to find the conductor
     during a performance?
     [5 pts.]

 10. Which of the following wrote incidental music to
     A Midsummer Night's Dream?
          a) Des O'Connor
          b) Mickey Mouse
          c) Felix Mendelssohn Bartholdy
          d) Terry Wogan
     [5 pts.]

 11. Which of the following is the odd one out?
          a) Sir Colin Davis
          b) Andrew Davis
          c) Sir Peter Maxwell Davies
          d) Desmond Lynham
     [5 pts.]

 12. Arrange the following words into the name of a well
     known Puccini opera.
          Bohème, La
     [5 pts.]

 13. Within five minutes, how long is Chopin's Minute Waltz?
     [5 pts.]

 14. From which of the following countries did Richard
     Strauss come?
          a) Venezuela
          b) Sri Lanka
          c) Germany
          d) Japan
     [5 pts.]

 15. For what town were Haydn's "Paris" Symphonies written?
     [5 pts.]

 16. Which is the odd one out?
        a) Fantasy Overture Romeo and Juliet -- Tchaikovsky
        b) Romeo and Juliet -- Berlioz
        c) Romeo and Juliet Ballet -- Prokofiev
        d) Ten Green Bottles -- anon.
     [5 pts.]

 17. From which song do the following lines come?
     "God save our gracious Queen, Long live our noble Queen."
     [5 pts.]

 18. Spell the following musical terms.
          allegro
          rallentando
          crotchet
          pizzicato
          intermezzo
     [5 pts.]

 19. Tosca is a character found in which Puccini opera?
     [5 pts.]

 20. Arrange the following letters to form the abbreviation
     for a well known British broadcasting corporation.
          C, B, B.
     [5 pts.]