|Pipe 1-2,||Sing 10-11:||C||G||A||D||Pipe 2-3,||Sing 9-10:||Gb||Bb||Eb||Pipe 3-4,||Sing 8-9:||B||Ab||Db|
|Pipe 4-5,||Sing 7-8:||A||C||Eb||F||G||Pipe 5-6,||Sing 6-7:||Bb||C||D||Ab||Pipe 6-7,||Sing 5-6:||B||C#||Gb||B|
|Pipe 7-8,||Sing 4-5:||A||G#||F#||Pipe 8-9,||Sing 3-4:||G||E||Bb||Db||Pipe 9-10,||Sing 2-3:||D||A||C|
|Pipe 10-11,||Sing 1-2:||E||F#||G#||Pipe 11-12,||Don't sing:||F#||A#||C||G|
Each singer goes through the score one note at a time, sounding the pitch once on the pitch pipe and then singing the pitch repeatedly in a regular rhythm using the syllable "Doo". (It does not matter what octave you pick to sing in.)
As you progress through the score, the pitch pipe tones get longer and longer, and the number of "Doo"s gets smaller and smaller, until for the last few notes you're not singing at all. The score gives approximate timings, in beats at roughly M.M. = 60.(That is, the timings are roughly in seconds, but I don't expect stop-watch accuracy.) You should do four "Doo"s per beat, so when it says, for example, "Sing 4-5", you would be singing "Doo" about 16 to 20 times. All the singers singing pulses should synchronize.
You should decide ahead of time what order singers should start in. Each singer should enter when the preceding singer is almost ready to move from the first to the second note. You could do this two ways — the singers could guess when to enter or each singer could cue the following one. Exact synchronization of entries is not a requirement!
When the last singer finishes, the piece is over. The total time should come out to about 10 or 15 minutes.