In business since 1996, Helmuth A Keller LLC is a professional quality instrument service. We specialize in Violin Services, Violin Making, Violin Repair, Violin Sales, Cello Services, Cello Making, Cello Repairs, Cello Sales, Viola Services, Viola Making, Viola Repairs, Viola Sales and more. We pride ourselves in the quality of our work, and in meeting the date scheduled for completion. We do business honestly and with integrity. For more information, call us today.