Smiley Bates prompted other recording ventures. When the Instrumental hit "Duelling Banjos" from the film "Deliverance" was popular, Smiley, on Flat-Top Guitar, was teamed with Eddie Poirier on 5-String Banjo. Though he had not seen the film, it only took a couple of tries to arrive at an arrangement, which, while not representative of Smiley's recording output, was nevertheless a commercial success. A further album was issued with Eddie and Smiley, and based upon its success, the two teamed up with Rose (Eddie's wife) to record another big-selling Bluegrass album, titled "The Best of Bluegrass". To illustrate how successful Smiley's recordings were,
Killer-tune to arrange the songs, also featured "Himitsu", which was arranged solely by Izawa, and "Tegami", which was composed by Izawa and arranged by Sheena. In late 2006 and 2007, Sheena briefly resumed solo activities in collaboration with Neko Saito, on "Heisei Fūzoku" (2007), a soundtrack album for the Mika Ninagawa film "Sakuran". The "Killer-tune" single was first announced on June 7, 2007, a month before the physical release of "OSCA". The "Variety" project for the band involved the band members other than Sheena amassing demo tapes, and the band making careful selections. For the project, Sheena worked as a vocalist