A teaching aid for students of the piano and other keyboard instruments to assist the student in learning keyboard fingering, note reading, scale tone names, the association of the scale tones with note position on the musical staff and on the keyboard, and the repetitive nature of the musical scale as revealed in the consecutive octave structure of the keyboard. The assembly comprises a rigid panel to which are mounted several groups of selectively exposable strips and panels and a rotatable disc, the panels, strips and discs displaying various arrays of intercorrelated musical indicia, with one of the groups of panels having certain of the musical data thereon deleted, to be filled in by the student.