There are actually 4 books in total. The first set of books is the 24 short concert pieces for flute and piano and there is a book for each part. In that book there are 22 songs. In the second book, the Selected Studiesis more of a scales and arpeggios book in major and minor keys. Included are 26 Etude exercises and special studies in double tonguing as well as scale exercises in every key. The third book , Belwin Master Studies has 6 songs in it.