Tomorrow, or today if you live in Japan, a “Gravity Music Festival” live stream will be aired on Niconico. Both Gravity Rush 2’s composer Kohei Tanaka and its director Keiichiro Toyama will be present, along with voice actress Ruriko Aoki. In the first half of the program they’ll talk about the game’s music, while the second part will feature a live performance by Kohei Tanaka’s band. You can find the link to the Niconico stream here. The event takes place from 21:00 to 23:00 in Japan, about 15 hours from the time this post was published.
Source: official Japan PlayStation blog