Inti Creates have streamed a new radio program of sorts in Japan, during which they talk up Azure Striker Gunvolt. During the program, they play Lumen’s songs—“Beyond the Blue” and “Reincarnation”—both of which you’ll get to hear in the game.
Judging by past information released by Inti Creates, it would appear that the two songs are split up into eight parts that will play during the course of the game. They are included in both the Japanese and North American versions.
“Beyond the Blue” can be heard at the start of the radio program, embedded above, and “Reincarnation” plays around the 9:00 mark.