Originally from Dublin, Ohio, Grant Jameson has spent extensive time both in the United States and the United Kingdom. He received his Bachelor of Music and Masters degrees from the Royal Welsh College of Music and Drama (RWCMD) in Cardiff (UK) where he studied with David Childs for six years. During his time in the UK Grant immersed himself in the British brass band tradition and won many awards and prizes within this genre, including Best Soloist at the Welsh Open (2014). Grant has also performed as guest soloist with many of the UK's finest bands, including Cory - the world's No. 1 ranked band, Grimethorpe Colliery from the movie 'Brassed Off!', Brighouse and Rastrick and the current National Champions of Great Britain (2018), Foden's.

Grant was also principal euphonium of Tredegar Town, Tongwynlais and Woodfalls bands, before joining the Flowers Band with whom he won various contests and featured as soloist, performing part of Sir Karl Jenkin's Euphonium Concerto, on the band's highly acclaimed CD release - Celebrate! - 5o years of Flowers. 

As a chamber musician Grant was the winner of the Philip Jones Brass Ensemble Competition (2013, 2014 and 2016) and gave several world premières with his award winning euphonium quartet. In 2015 Grant won the prestigious RWCMD Concerto Competition and performed Joseph Horovitz' Euphonium Concerto with the RWCMD Orchestra. During the same year he appeared as soloist with the Central Band of the Royal Air Force, performing as a duet artist alongside Philip Cobb, Principal Trumpet of the London Symphony Orchestra. In addition Grant also won the prestigious BBC Radio 2 Young Brass Award (2015), the first American to ever achieve this distinction.

As a recording artist, Grant has released two solo albums: Genesis" (2015) and Versatility Reimagined (2019). He's also been featured on TV and radio with broadcasts by the BBC and S4C. In 2019 Grant appeared alongside fellow Besson Euphonium Artist, David Childs, performing duets at New York's Rainbow Lounge in a concert to honor Hollywood A-lister, Catherine Zeta-Jones CBE.

Currently a DMA candidate and Teaching Fellow at the University of North Texas, Grant is busy as both performer and teacher, with a large private euphonium studio spanning the DFW metroplex.