He co-produced "The Memphis Album" (2007), recorded by Australian soul singer Guy Sebastian. Cropper also played guitar on the subsequent promotional tour, which was recorded and released two years later as "The Memphis Tour". On March 2, 2008 Cropper and Sebastian were guests on the "Vega Sunday Session" with host Mark Gable from the rock band the Choirboys. On July 29, 2008, Cropper and Felix Cavaliere released the album "Nudge It Up A Notch". In August 2008, Cropper appeared at the Rhythm Festival alongside the Animals.