Empty Ensemble announced the release of its first single on Aug. 25, 2015. The instrumental track, titled 「無題平成23六月五日」, combines Indonesian gamelan, Indian tabla, Japanese taiko and a Western string orchestra. The single is being released through CD Baby and will be available on all major outlets — iTunes, Spotify, Amazon MP3 Store and Google Play.

Back in November 2014, Eponymous 4 announced the Retrograde Single Series, six singles released monthly from January to June 2015. The first single, “engimatics IV“, is now available on Bandcamp, iTunes, Amazon MP3 Store, Google Play, Spotify and Beats Music. The remaining singles in the series will be released on the last week of each month, with the b-sides collected on Retrograde Songs arriving in July 2015.