Complex sentence: Recording was delayed due to bassist John Entwistle and singer Roger Daltrey working on solo albums, while drummer Keith Moon worked on films, and because a new studio was not finished in time, the group had to use Ronnie Lane's Mobile Studio.
Split into simpler sentences: Recording was delayed while bassist John Entwistle and singer Roger Daltrey recorded solo albums and drummer Keith Moon worked on films. Because a new studio was not finished in time, the group had to use Ronnie Lane's Mobile Studio.