Late last week, Moog Music rolled out version 2.0 of its Animoog synthesizer app for Apple's slate. Now, the Asheville, North Carolina outfit is adding a truckload of new sounds less than a week after the initial release. The Grateful Dead Expansion Pack is now available for the iPad software, touting 82 presets and 45 timbres broken down into ensemble, percussion and vocal groupings. Each piece of the add-on was taken from a February 1968 performance at the Carousel Ballroom and optimized for the Animoog platform. "We're not simply providing samples from the Grateful Dead's body of work, rather we've distilled the essence of notes and phrases in a different way to transform these performances into new instruments -- new voices," says Cyril Lance, Moog's Chief Engineer. The $4.99 in-app purchase is available now, but while you're mulling it over, jump down past the break to catch a glimpse of Mickey Hart taking it for a spin.