Bandleader/Pianist/Composer/Arranger Mark Simeon Ferguson completed a Master of Music in 1999. He was a semi-finalist in the 1999 National Jazz Awards at the Wangaratta Jazz Festival.

He has performed with Mark Murphy (US), Eugene “Hideaway” Bridges (US), Lillian Boutte (US), Brenda Buffalino (US), Scott Tinkler, James Morrison, Don Burrows, Frank Bennett, Marina Prior and  Julie Anthony, and supported artists such as Nina Simone, Jose Feliciano, Angelique Kidjo, Tuck and Patti (US), Martin Taylor (UK), and Mike Stern (US).

As well as leading Marmalade Circus, Marmalade Trio and Marmalade Jam, he has worked as pianist and/or musical director for shows and bands such as The Fabulous Singlettes, Women With Standards, Andy Seymour's The Gospel Music of Elvis Presley, The King and I and Swingers and Crooners, TNTLatinoz, Peter Combe, and the Tubby Justice band, performing across Australia.

In 2007 he was commissioned to write two new compositions for the Mike Stewart Big Band.

In 2006 he was commissioned to arrange a ‘Gospel' version of Handel's Messiah for the Adelaide Symphony Orchestra with soloists including James Morrison, Doug Parkinson, Paulini and Trace Canini to be performed in December 2007.

In 2005 he was commissioned to arrange two of his compositions for the Marryatville High School Big Band for their performances at the IAJE in New York in 2006 with James Morrison.

In 2005 he began writing for online interactive music education site inthechair.com based on the works he created for his Marryatville High School students.