Stratz's Piano service has been in business in Oshkosh since 1950. Joe Stratz started the business after he left Wilsons Music and Appliance Store as director of the music department in 1949. For a number of years he was president of the Wisconsin Piano Technicians Guild. His son Mike Stratz took over the business in 1969 and continues to tune and repair pianos all over east central Wisconsin. Mike is a past member of the Milwaukee branch of the Piano Technicians Guild and holds a BBA from UW-Oshkosh.