I realise that many instrumentalists find sight-reading difficult. However, they should spare a thought for singers. Except for those who have perfect pitch, singing at sight is a lot harder than playing at sight on an instrument.

This is a check list for sight-singing in ABRSM Singing Grades 1 to 5, and for general aural tests in Grades 6 to 8 (tests 6b, 7b and 8b).