Kemper joined well-known Dutch progressive rock band, Focus, for a short period in the mid-1970s, playing both on the Mother Focus album and on tour.
Mother Teresa | How I Met Your Mother | Queen Elizabeth The Queen Mother | Mother's Day | Mary (mother of Jesus) | Focus on the Family | Mother Jones | Mother Goose | Mother Jones (magazine) | Mother Father Brother Sister | Focus | Mother India | Ford Focus | Queen Mother | Mother Nature | I Mother Earth | Focus Features | Cat Mother & the All Night Newsboys | Sub Focus | Mother Courage and Her Children | Mother Courage | Divine Mother | Auto Focus | Working Mother | Whistler's Mother | The Mother | Old Mother Riley | Mother Superior | mother | Germany, Pale Mother |