When Ligeti taught composition at the University of Stockholm in the 1960s, he met his famous Swedish fellow composer Hilding Rosenberg (1892-1985). Ligeti wrote this musical greeting on the occasion of Rosenberg's 90th birthday. The little piece is easy to play, composed idiomatically for the instruments. It shows that Ligeti, like Bach, Schumann and Bartók, was able to write easily playable and at the same time tonally convincing music in his personal style.