The studio's name is borrowed from a fictional, secret military installation on "The X-Files."

Milwaukee's Field Report, headed by vocalist Chris Porterfield, and Bon Iver drummer S. Carey, have both recorded at April Base. And the space served as an incubator for Baraboo-born, Madison-based six-piece PHOX.

PHOX's self-titled debut comes out next month, and the group will play two homecoming shows — the second of which is sold out — at the High Noon Saloon on Aug. 7 and 8.