a connector for securing a guitar to a strap , having a body with an opening and an engagement member slidable within the body . the engagement member has an opening with two portions . the first portion is large enough to receive the anchor post and the second portion is narrow enough to prevent the anchor post from passing through it . the user slides the first portion into alignment with the opening in the body and inserts the anchor post . then , the user slides the engagement member so that the second portion impedes the release of the anchor post . the body may also have an opening for removal of the engagement member and / or an opening to facilitate sliding of the engagement member . also there is disclosed a flexible support with one or more connectors and a strap , and a system including connector , a strap and a guitar .