These are the audio files for It’s Oh So Quiet. Download the file for your part, plus the file that is just called It’s Oh So Quiet, which has all parts.
An MP3 player should recognise the files as being part of an album called MCC Christmas 13 with artist Medina Community Choir.
In terms of instruments used, sopranos are piano, altos violin, tenor saxophone and basses bassoon; the solo is a voice ah. The sound is also panned in the stereo field, so sopranos are fully on the left side; altos mostly left, some right; tenors mostly right, some left; and basses fully on the right side.