Fundamentals of Piano Theory - Level One - Written by Keith Snell, Martha Ashleigh. Instructional book for piano. With instructional text, musical examples. Piano Lessons for those who just want to try it out - - Our Piano Lessons for those who want to learn basic music theory - - Our Piano Lessons for those who. A piano method to please students, teachers and parents! The Hal Leonard Student Piano Library is clear, concise and carefully graded. Play Piano! Theory Activity Book is part of the piano course from Alan Haughton and is full of exciting activities to help understandig of music facts and.