By Len Vogler. For Keyboard. Sheet Music and Audio CD. 32 pages. Published by Music Sales.

By Len Vogler (Compiler). For Piano Solo, Keyboard. Sheet Music and Audio CD. 32 pages. Published by Wise Publications.

By Len Vogler. Book. Published by Music Sales. (AM946924) The ultimate compact reference book of keyboard scales. Over 220 scales, in all twelve keys for all keyboardists presented in standard notation and easy-to-read diagrams with fingering notation and pivot points.

Fasttrack Music Instruction. Book and CD package. Size 9x12 inches. 48 pages. Published by Hal Leonard.

Basix Scales, Chords and Arpeggios for Keyboard by Willard A. Palmer, Morton Manus, and Amanda Vick Lethco. For Keyboard; Piano. Keyboard/Piano. Basix® Series. Book and CD. 72 pages. Published by Alfred Music Publishing