The Rhythm Tech Percussion Basics Kit includes a Rhythm Tech Tambourine - the most widely played hand held tambourine in history, Rhythm Tech's 5" Studio Shaker for a controlled "dry" sound, the 5" Studio Series Cowbell, and the versatile Mountable Gig Tray (MGT), all in a durable, sling-style, back pack - a cool, free extra. The RT BSX is not just for drummers and percussionists. As the MGT fits right on a mic stand, this is a great starter kit for any musician or singer. The Rhythm Tech BSX... essential equipment.