Excalibur Jam Fest - 3-In-1 Music Machine Jam like a Rock Star Play real notes on guitar, keyboard and drums! Play notes, chords, or entire riffs; 5 different musical Styles: Rock, Country, Heavy Metal, Techno, Hip Hop Plug in your MP3 player or iPod and play along with YOUR favorite songs No software/plug-in/accessories required, just play through the built-in speaker or connect to an external speaker for maximum power