High Quality Content by WIKIPEDIA articles! The Yamaha P-120 is a portable electronic piano. The 88-key keyboard is action-weighted, imitating the feel of a real piano. It includes several sample keyboard sounds, such as harpsichord, clavichord, vibraphone, guitar and more. Basic sequencing and editing are built-in. Excellent feel to the keys, good tone, easily accessed ports on side (not back). Problems with keys sticking have been reported.