Percussion Plus Classic Red Box Bass Metallophone - Chromatic HalfThe Percussion Plus metallophones are constructed in a similar way to their glockenspiels. They are part of the ever popular Percussion Plus Classic Red Box range, so called because of the instruments' superb tuning accuracy. Each model features a sturdy wooden frame with the classic Percussion Plus red finish, and contains four separate resonating chambers that amplify the aluminium note bars' mellow sound. Players can also engage a hand operated