piano bending reference harp harmonica

The piano IS the standard reference instrument in the music word... for all instrumentalist. As a music major in college everyone is required to have a basic proficiency on the piano. Due to its very visual nature and the fact that it can play both single note melodies and chords, it's a wonderful reference for whatever you may study or play. If you don't own a piano, keep your eyes open for an inexpensive electronic keyboard, it's a valuable reference to have in your practice room, especially if you're studying bending or the music theory lessons on the site.