Singing Tongue Twisters A-Z contains 50 fun filled wacky warm-ups to improve pronunciation, vocal range and technique. Perfect for teachers and kids, this fun sing-a-long book contains music tongue twisters of variable difficulty levels, read-a-long worksheets, and a 50 track sing-a-long CD. Singing Tongue Twisters is an excellent warm up tool for choral groups and a fun practice workbook for individual singers. 80 Pages with CD.