Complex sentence: During a 1973 concert by The Who, their drummer Keith Moon, passed out from an overdose of horse tranquilizers and a fan of the band, Scot Halpin, completed the group's set that evening.
Split into simpler sentences: During a 1973 concert by The Who, their drummer Keith Moon, passed out from an overdose of horse tranquilizers. A fan of the band, Scot Halpin, completed the group's set that evening.