Complex sentence: Miller sang for US servicemen in Vietnam, performed at the Hollywood Bowl, guest starred on numerous television shows, and appeared in Roddy McDowall's film "The Cool Ones", where she sang "It's Magic".
Split into simpler sentences: Miller sang for US servicemen in Vietnam, performed at the Hollywood Bowl, and guest starred on numerous television shows. She also appeared in Roddy McDowall's film "The Cool Ones", where she sang "It's Magic".