yes including the[[ Beatles [in germany]a drummer who couldnt keep steady time [ not Ringo]and a bass gutarist that by his own admission couldnt play [ not paul]]],,AND THE ROLLING STONES in their early days,who were according to reputable witnesses, out of tune and barely competent.
to ron olesko, ,the correspondent did not have high expectations she was expecting the group to be well rehearsed,and not to rehearse on stage[ in front of the paying public] before the concert[ reasonable enough.]