Schlager Definition of the German term Schlager in music: pop song, hit song Language German Singular Schlager Plural Schlager Related terms German musical terms related to Schlager: Choral – plainchant, plainsong...Chorlied – choir songGesang – song, hymn, chant...Lied – songLiedchen – short songSang – song, chantSingweise – melody, tune...Weise – tune, melody