Abstract: A new Harmonica Shoulder Holster for offering an easy, efficient, and attractive means of carrying musical harmonicas. The inventive device includes a backing material, a plurality of harmonica pockets, a plurality of note pockets, a leg strap, a pants strap, and a shoulder strap. In use, the Harmonica Shoulder Holster 10 is equipped with harmonicas 6, notes, a pen 4, and a pencil 2. The device is then slung over the left shoulder of the musician and the pant straps 16 are then fastened to a musician's pants using the strap clamps 17. Finally, the leg strap 15 is fastened to the musician's left leg using the leg strap attachment means 21.