Complex sentence: By then the group had returned to the studio with Albini to record two instrumental tracks, and original copies of Tweez "included a flyer advertising a 12" single of these songs to be released on Jennifer Hartman.
Split into simpler sentences: By then the group had returned to the studio with Albini to record two instrumental tracks. Original copies of Tweez "included a flyer advertising a 12" single of these songs to be released on Jennifer Hartman.