Apple today introduced Jam Pack, an add-on music content package for Apple’s new GarageBand music creation software, which was announced today as part of iLife ’04. “Jam Pack triples the music content for musicians and aspiring musicians alike with over 2,000 additional loops including many for hip-hop and electronica; over 100 additional software instruments, including a concert grand piano and 12 string guitars; over 100 additional pro-quality effects presets; and 15 additional guitar amps, including surf, grunge, heavy blues and atmospheric.” Jam Pack will be available on January 16 for US$99.