Of the three tracks on One-Sided LP, one features Efterklang collaborating with famed Danish singer Martin Hall who provides the vocals for "Tu Es Mon Image" and another features Edda Rún Ólafsdóttir and Hildur Àrs'lsdóttir from Amiina as guest musicians. The LP jacket features a faraway portrait of the band in keeping with the portrait theme for cover artwork in the Burnt Toast Vinyl one-sided LP series. Vinyl.