The new line-up performed at the 1972 Reading Festival on 12 August 1972. Barcus Berry instrument pick-ups, now sported by the band's string trio, allowed them to have proper amplification on stage for their instruments, which had previously been all but drowned out by the electrified instruments. The band released their second album "ELO 2" in early 1973, which produced their second UK top 10 and their first US chart single, an elaborate version of the Chuck Berry classic "Roll Over Beethoven" (which also incorporated the first movement of Beethoven's own Fifth Symphony). ELO also made their first appearance on "American Bandstand". During the recording of the third album, Gibson was let go after a dispute over money, Mik Kaminski joined as violinist, and Walker left since touring was keeping him away from his family too much. Remaining cellist Edwards finished the cello parts for the album. The resulting album, "On the Third Day", was released in late 1973, with the American version featuring the popular single "Showdown". After leaving Wizzard, Hugh McDowell returned as the group's second cellist, also in late 1973, in time to appear on the "On the Third Day" cover in some regions, despite not having played on the album.