 According to Pete Townshend, Oliver Reed had incredible problems  recording his part of the soundtrack owing to his inability to sing,  and he was able to complete it only because his singing parts were  recorded in small bits. Because of this frustrating experience,  Townshend was extremely suspicious towards Jack Nicholson when he  was chosen to the role of the doctor. Townshend, however, finally  agreed when he heard Nicholson singing effortlessly.