Brendan Cavanagh, also known as ‘Dr K’, is an Irish British contemporary pianist and piano teacher with over 1.5 million YouTube subscribers. Specializes in playing and promoting boogie-woogie, almost exclusively improvised, often combined with jazz, blues, rock ‘n’ roll and traditional Irish musical themes.

He regularly performs in open spaces with public pianos, sometimes on four hands with passers-by or friends. He also plays the accordion with an emphasis on traditional Irish tunes. In 2007, Brendan Cavanaugh founded Dr. K Media Limited, a multi-platform interactive piano education in the boogie, blues and rock ‘n’ roll genres, has shifted its focus to online teaching, sales, performance and piano music promotion to focus on boogie-woogie music.