This is quite true. I have it on very good authority that RP does not want them trying to sing anything high while their voices are changing. It could very easily damage their vocal cords.tcenrt wrote:
Also, during the changes, the voice can be a little unpredictable and some boys may have to stop singing for a little while.
Also, on good authority, none of the boys is ever forced to leave. They are allowed to remain as long as they feel like it. Mostly in the adult choir though or in behind the scenes work. While most of RP's compositions call for only treble voices, he does write in some lower parts. Sancte is a very good example. with lower parts sung by MH, JB and CP.