B2 has expanded its miJam line of musical instruments that work with Apple's iPod and other digital music players by adding the miJam mini line of pocket-sized music makers. New instruments include the miJam Mini Drumpad, Keyz, Guitar, and Mixer. B2's miJam mini Drumpad offers icons for snare drums, bass drum, tom tom, and cymbals; the miJam Mini Keyz presents a miniature keyboard with key icons that is playable by itself or with a music device; the miJam Guitar serves as a miniature guitar that plays riffs and chords when users place a finger on the mini fret board and strum the strum bar; b2's miJam Mini Mixer is a DJ mixer with a range of built-in sound effects, allowing users to select sound effects and scratch two discs in either direction with thumbs or fingertips. B2's miJam Mini instruments are priced at $25 each.