For the band's fourth album, "Eldorado", a concept album about a daydreamer, Lynne stopped multi-tracking strings and hired Louis Clark as string arranger with an orchestra and choir. The first single off the album, "Can't Get It Out of My Head", became their first US top 10 hit, and "Eldorado, A Symphony" became ELO's first gold album. Mike de Albuquerque departed the band during the recording sessions as he wished to spend more time with his family, and consequently much of the bass on the album was performed by Lynne.