Malcolm McDowell's son Beckett Rex drops out of American Idol Beckett is the adored performer who enthralled multitudes of admirers with his noteworthy talent on the popular singing competition. Rex won over audiences across the nation with his spellbinding singing abilities and charismatic stage presence. His commitment to depart the show astounded the entire audience, leaving his devotees heartbroken. However, Beckett will always be remembered as an role model in the history of American Idol.