Complex sentence: Meisner had been struggling to hit the crucial high notes in the song during the "Hotel California" tour, although according to Joe Walsh, Meisner could perform the song, but became nervous when told he had to sing it.
Split into simpler sentences: Meisner had been struggling to hit the crucial high notes in the song during the "Hotel California" tour. According to Joe Walsh, Meisner could perform the song, but became nervous when told he had to sing it.