John Gruber 3/14/24 John Gruber 3/14/24 American Trombone Workshop Read More John Gruber 11/26/23 John Gruber 11/26/23 ITF Performance now live on YouTube Read More John Gruber 8/8/22 John Gruber 8/8/22 Solo Appearance with the Akron Symphony Read More John Gruber 7/14/20 John Gruber 7/14/20 Upcoming Masterclass Read More John Gruber 7/12/19 John Gruber 7/12/19 John Gruber appointed at Oberlin Conservatory Read More John Gruber 10/16/18 John Gruber 10/16/18 Fall 2018 Update! Read More John Gruber 4/15/18 John Gruber 4/15/18 Welcome to my new website! Read More