I know that both the Eagles and Paul have both recorded LWKUA and IDWTHA, and that Timothy and Don H sang backup for Paul. However, I downloaded this version of LWKUA that is really like a duet between Paul and Timothy. On I tunes it is credited to both of them. I absolutely love their voices together. Hearing how well Timothy can blend with Paul makes me realize why he was so sought after as a backup singer. You can tell it's him, but he really listens and tries to match the lead vocals. Its a sign of a great vocalist and musician.
The arrangement is gorgeous! I would love to hear more from the two of them
http://www.youtube.com/watch?v=bDFiMt6iNKo