Bassist Aaron Keaster has been playing double bass with the Toledo Symphony since 1996. He received a Bachelor of Music Education from Wichita State University in 1993 and a Masters of Music in Double Bass Performance from Indiana University in 1996. He has performed with the Michigan Opera Theatre, Fort Wayne Philharmonic, Wichita Symphony, Evansville Philharmonic, and the Wichita Jazz Orchestra. Aaron has also had the fortunate opportunities of playing on a cruise ship in the Mediterranean and performing with Mickey, Minnie and Donald at Disney's Epcot Center.

Aaron currently teaches double bass and cello lessons at the Toledo Symphony School of Music, Toledo School for the Arts and Adrian College. He is also an assistant with the cello and bass orchestra classes at Hull Prairie Meadows Intermediate School in Perrysburg. Aaron has previously been on the music faculty at Bowling Green State University and the Interlochen Summer Arts Camp and has worked as a String Specialist for the Perrysburg schools.