Olivia Newton-John and Electric Light Orchestra (ELO) are two distinctive entities in the music industry. Newton-John is a British-Australian singer, songwriter, and actress known for her pop and soft rock style, gaining significant fame for her role in the 1978 musical film "Grease." ELO, led by Jeff Lynne, is a British rock band known for their unique fusion of rock, pop, and classical music. They're recognized for hits like "Mr. Blue Sky" and "Evil Woman." Both Newton-John and ELO left significant marks on the music industry, with their influence resonating in many subsequent pop and rock artists' works.