Susan Boyle sings into a hairbrush during an April 16 interview at her home. (AP File Photo)
Susan Boyle is back onstage after another bout of exhaustion. The Scottish singing sensation performed last night in Glasgow as part of the "Britain's Got Talent" live concert tour amid rumors she might not appear. Boyle got standing ovations Friday and Saturday, then skipped two shows Sunday after she was "advised to rest," her spokesman announced. The will-she/won't-she saga continues for three more weeks: The tour runs until early July.