He has worked with Chris Brown, Babyface, John Legend, Cheryl Cole, Kelis, Seal, DJ Paul, Dizzee Rascal, N-dubz, Kerli, Priscilla Renea, Brian "BK" Kennedy, The Black Eyed Peas, Jesse McCartney, The Noisettes and William Orbit amongst others.

After three years of touring and DJing in the bay area, Marsh moved from San Francisco to LA and began working with the production team "Free School".

In the Summer of 2011, Marsh left Free School to perform/DJ under the name "Public", and continued to write and produce with various songwriters and artists.

Marsh also co-wrote Chris Brown's smash hit "Don't Wake Me Up' which won the ASCAP award for most performed songs of the year in 2012 alongside Alain Whyte, Alessandro "Alle" Benassi, Brian "BK" Kennedy, Brown, Marco "Benny" Benassi, Michael McHenry, Priscilla Renea Hamilton, Ryan Buendia and William Orbit, which went number one in three countries.

Marsh also performed select dates of the 2013 Identity Festival alongside Eric Prydz, Hardwell, Wolfgang Gartner, Chuckie, Bingo Players, Porter Robinson, Adrian Lux, Paul Van Dyk and Kerli, amongst others.