[1] He has played with Patricia Kaas, Anderson Bruford Wakeman Howe, Spice Girls, S Club 7, Ray Davies, Take That, Robert Palmer, M People, Louise, Mick Jagger, Tina Turner, Atomic Kitten, Hear'Say, Mylène Farmer, and Girls Aloud.
McDonald also played for All Saints, Rick Astley, Jon Anderson, Bryan Adams, Blue, B*Witched, Gary Barlow, Bb Mak, Beverley Knight, Jocelyn Brown, Boyzone, Victoria Beckham, Bellefire, Ed Case, Alice Cooper, Drizabone, Eternal, Five, Eddie Floyd, Gabrielle, Gareth Gates, Geri Halliwell, Gianna Nannini (Italy) Deni Hines, Steve Harley, innosense, Brian Kennedy, Chaka Khan, Ronan Keating, Liberty X, Lulu, Martine Mccutcheon, Mel C, Melissa Mars, 911, Billy Ocean, Alexander O'Neal, Mica Paris, Billie Piper, Roachford, Skin (Skunk Anansie), Lucie Silvas, Sugababes, 3 Blind Mice, Westlife, Bill Wyman, Wet Wet Wet, Yes, Will Young, Eikichi Yazawa and Kumiko Yamashita.
In 2009 he appeared on Ray Davies’ album The Kinks Choral Collection and featured in the house band for Children In Need Rocks the Royal Albert Hall, playing guitar for Shirley Bassey, Dizzee Rascal, Annie Lennox, Paolo Nutini, Take That, Leona Lewis and Robbie Williams.
Milton McDonald replaced Rob Harris, guitarist for Jamiroquai, for a concert in Almaty, Kazakhstan, on 15 September 2012.
Together with his wife, Melanie Lewis-McDonald, he is a touring member of Jeff Lynne's ELO, as backing vocals and guitar.