sentences:  His first composition, the "Forget-Me-Not Polka in C (Polka pomněnka)" was written possibly as early as 1855.Dvořák took organ, piano, and violin lessons from his German-language teacher Anton Liehmann.Liehmann also taught the young boy music theory and introduced him to the composers of the time; Dvořák had much regard for Liehmann despite his teacher's violent temper.