The Summer Sonic Festival is an annual rock festival held at the same time in Osaka and Tokyo. The majority of the bands playing in Osaka the first day go to Tokyo the following day and vice versa. The lineup contains many Japanese rock musicians from both major and indie record companies, and also international acts. It also operates the festival Sonicmania, with an EDM focus, since 2011. Summer Sonic is an independent festival, owned by Creativeman Productions Ltd.
from Festivals – Consequence of Sound }