The Swingle Singers often use "Flight Of The Bumble-Bee"as an encore piece. It has to go as fast as possible using a great variety of scat syllables in order to avoid lock-jaw. It also includes a fairly literal vocal transcription of Debussy's famous piano piece, "Claire de Lune." The tessituras are quite wide ranging from low D-flats for the basses to high B-flats for the sopranos. It is probably best sung with the help of microphones. This transciption of a Chopin "Etude Op. 25 No.9" is probably easier to sing than it is to play! It should be performed at a brisk pace, with the main melody alternating between the Tenors and the First Sopranos. "Overture to Marriage of Figaro" - It was an interesting challenge to arrange this wonderful overture for eight voices. My group has often used it to open a concert. Of course it is very difficult but quite a few choirs have managed to master it. I think it works equally well on or off mikes, as long as a proper balance is maintained among the voices. Ward Swingle