A one piece combination guitar string pick and shoulder strap lock that engages and retains a guitar shoulder strap upon one or more anchor posts affixed to the guitar. The combination pick and strap lock is not a part of the shoulder strap, and is used after the shoulder strap is affixed to the guitar body using standard shoulder strap clasps. The present invention then slides over the anchor post head using the clasp arm assembly and pressing the anchor post past the clasp assembly pinch point until the anchor post head snaps against the back of the anchor post channel in the body member and the anchor post stem is then held firmly by the clasp arm assembly. Another embodiment of the invention supports adding decorative figurines for novelty. Another embodiment supports semi-permanently affixing the present invention to the anchor post with a bolt extension.