Apparatus for providing teeth position guide for single-reed woodwind music instruments are disclosed. The apparatus includes a mouthpiece patch containing top and bottom sides with at least two thickness layer formed therebetween. The bottom side is a flat surface having an adhesive means configured thereon. The top side is a split-level surface containing first and second levels having different thicknesses. A ledge is formed between the first level and the second level, whereby the ledge is configured as a position guide for upper incisor teeth of a player of woodwind instruments, when the mouthpiece patch is attached to a mouthpiece.