Apple's iLife suite spawned a new peripheral software product at Macworld Expo, Jam Pack – the company's add-on music making package for new iLife product GarageBand.

GarageBand lets Mac users record performances, combining digital audio and looping tracks together, arranging these to make complete songs.

JamPack boosts the new product's in-the-box selection of music resources with another 2,000 music loops; over 100 additional software instruments, including a Grand Piano, 12-string guitars, vibraphones, additional drums, new organs, synthesizers and basses; over 100 additional pro-quality effects presets; and 15 additional software-simulated guitar amps.

As it ships, GarageBand offers 50 software instruments, including a premium-quality grand piano that can be played and recorded with any USB or MIDI music keyboard. Over 1,000 pre-recorded audio loops are included with the product, alongside over 200 effects presets. Its users can also record vocals and live instruments using a microphone or analogue inputs.

Jam session Apple CEO Steve Jobs said: "GarageBand is like having over 50 musical instruments, a studio of professional musicians and the best recording engineers right at your fingertips. Jam Pack takes GarageBand even further, with even more professional-quality instruments, loops, effects and guitar amps."

Jam Pack ships January 16 (the same day as iLife '04) and costs £69 including VAT. It require Mac OS X v10.2.6 or later, QuickTime 6.4 or later, a Mac with a 600MHz or faster G3, G4, or G5 processor, 256MB or more RAM and a 1024-x-768 or larger display. A G4 or G5 processor is required for GarageBand software instruments.