The volume 4 audio/book kit wraps up reading with 13 fun and energetic songs teaching r-controlled vowels ar, or, er, ir, and ur and blends ck, sp, st, sm, sn, sc, sk, sl, sw, bl, cl, fl, pl, br, cr, gr, tr, dr and pr. The complement of music accompaniment tracks can be used for class performances. Lyrics book may be photocopied by the teacher.