A longtime pillar of the Chicago underground community, Sam Prekop was best known for his work creating the post-rock sound with the Sea and Cake before he began crafting adventurous solo albums as well. Beginning with an eponymous album in 1999, Prekop gradually shifted his sound from breezy post-rock not dissimilar from his main band into explorations of modular synthesis on 2010's Old Punch Card. By the 2020s, he was exclusively making rhythm-driven instrumental electronic music, teaming with longtime Sea and Cake collaborator John McEntire for their first work as a duo on the entirely instrumental 2022 album Sons Of, and releasing solo electronic work of his own like 2020's Comma and 2022's The Sparrow.