[1][2] Mac got his break in the music industry in the early 1990s when he wrote and produced the Nomad hit "(I Wanna Give You) Devotion", that reached no.2 in the UK Singles Chart.

He has written, co-written and produced hits for musicians including Ed Sheeran, Melanie C, Pink, Westlife, Little Mix, and many other UK and international singers.

As well as a string of no.1 UK and international hits, Mac has also penned top 10 singles for artists such as Calvin Harris, Demi Lovato, One Direction, The Saturdays, Leona Lewis, and Rita Ora, among others.

[8] In 2012, the producer worked with a host of artists including Little Mix, The Wanted, The Saturdays, Susan Boyle, Il Divo, Boyzone, and Gareth Gates.

Between 2013 and 2015, Mac worked with several musicians include James Blunt, John Newman, Union J, Calvin Harris, The Vamps, and Demi Lovato.

The single also won in the EDM Winning Songs category alongside his other co-produced track for Clean Bandit and Zara Larsson, "Symphony".