Help with your practice
You can find rehearsal tracks on these websites:
1) Choralia This uses synthesised voices & has its own MP3 player with a useful speed changer.
2) Learn Choral Music This uses synthesised orchestral instruments and uses the usual MIDI player on your device.
3) Chord Perfect This uses real singers, is free if you listen online, and offers options to go back by 5 seconds and slow the track down.
Recommended by Leon to help with sight reading!