Hymn Arrangements and Worship Resources Ready in One Rehearsal. Worship Materials by Mary Kay Beall. The Sunday Choir Kit contains fresh hymn arrangements and creative worship resources ready when you need them most...slim Sundays, summer months, special services, bad-weather Sundays, or times when attendance is low or rehearsal time is at a premium. The kit is also a great resource for smaller choirs for use any time. Each Kit contains 10 choral books, reproducible sheets containing spoken calls to worship and music involving congregation, performance suggestions and a performance/accompaniment cassette. Available: 2-Part Mixed, Complete Kit, Preview Cassette, Preview Pak.