Complex sentence: So far, two 7 s have been released: the first with LA-based rapper Busdriver and his band Physical Forms (which includes a former member of The Mae Shi), and the second with Xiu Xiu.
Split into simpler sentences: So far, two 7 s have been released. The first with LA-based rapper Busdriver and his band Physical Forms (which includes ex members of The Mae Shi), and the second with Xiu Xiu.