The British rock group referred to in the crossword solutions is Electric Light Orchestra (ELO). ELO was formed in Birmingham, England in 1970 by Jeff Lynne, Roy Wood, and Bev Bevan. The band's sound was a combination of classical music and rock and roll, and they had a string of hits in the 1970s and 1980s. ELO was one of the most successful British rock groups of the era, selling over 50 million records worldwide.