The London, England-born musician was a soloist and chamber musician who has performed in cities all around the world. He has been a soloist with the Vancouver Symphony, Kitchener-Waterloo Symphony, Chicago Symphony and more. Over the years, he has also collaborated with conductors such as Edwin Outwater, Nikolas Caolie, Eduard Zilberkant and Bramwell Tovey.

Longworth was also a founding member of the Duke Piano Trio, an ensemble he started with violinist Mark Fewer and cellist Thomas Wiebe. Together, they performed throughout the U.S. and Canada. Outside of that, he made many recordings for Azica Records including the complete Brahms violin and piano sonatas with Fewer. Academically, Longworth has been a faculty member of the Glenn Gould School in Toronto since 1991, inspiring an entire generation of classical artists.