His parallel careers have introduced him to every star in the musical firmament, many of whom appear on the Best Of Friends. The 21-track extravaganza culls favorites from Holland's last six albums, boasting high wattage performances from diverse, world-class music icons including Bono, Sting, Norah Jones, Tom Jones, Eric Clapton, Chrissie Hynde, and Edwin Starr, among many others. The disc also introduces new recordings with soul chanteuse Ruby Turner and pop diva Lulu as well as a remix of the George Harrison-penned song 'Horse To The Water, featuring vocals from George.