The Heidelberger Frühling gGmbH is one of the most important initiators in the field of classical music and festivals. It hosts the Heidelberg String Quartet Festival, the International Music Festival Heidelberger Frühling, the concert series Kammermusik Plus, a Festival Academy for Lied, Chamber Music and Music Journalism, and the Heidelberg Music Conference, an annual conference for European festivals and concert halls. Each season, Heidelberger Frühling organizes over 120 events as well as Thomas Quasthoff's biennial international singing competition "DAS LIED". Together with artists such as Thomas Hampson and Igor Levit, projects and productions are created in Heidelberg that have a lasting impact on the cultural world. More than 47,000 visitors come to these events every year.