Mark has been repairing instruments since 1997. He started his repair career as an apprentice at Karnes Music (now Music and Arts) in the brass department. He moved to the Saxophone Shop in 1999 to focus on woodwinds. In 2002 he started working for International Music Suppliers and its sister company Music Starts Here. In 2005 the Saxophone Shop merged with International Music Suppliers to become one company. In addition to repairing instruments, Mark is an experienced machinist. He has fabricated many parts and keys, such as missing saxophone keys and trumpet bottom valve caps. In addition to learning from many older technicians, Mark is a member of the National Association of Professional Band Repair Technicians (NAPBRIT), an organization devoted to keeping technicians up-to-date on the latest materials and tools in the industry and furthering the repair trade. Mark gave a presentation at the 2006 NAPBRIT national conference on machining custom saxophone keys.