The second album, "Wow/Grape Jam", released in 1968, was generally viewed as a critical and commercial disappointment, even though the album charted at No. 20 on the Billboard Pop Albums charts, partially due to the special low price double-album packaging. The album included the track "Just Like Gene Autry, a Foxtrot", a tribute to the big band era which was tracked to only be played back properly at the speed of 78 RPM. The "Grape Jam" LP was one of loose, improvised studio jams with outside musicians. Also in 1968, the band contributed to the soundtrack of the movie "The Sweet Ride", and appeared, credited, in the film.