Abstract: The presently disclosed subject matter is generally directed to a mounting system that securely stores an instrument (e.g., a guitar) on either side of a support, such as an amplifier and/or speaker. The disclosed system includes a main bar that directly contacts a top surface, such as a speaker cabinet. The main bar comprises a pair of side arms that support mounts. In this way, a pair of instruments can be simultaneously suspended by the headstock on either side of the support. The system also includes a support bar operably attached via connectors to the main bar for the releasable attachment of a microphone. The support bar comprises at least one foot assembly that locks the system in place under the lip of the top support surface. Advantageously, the system securely retains an instrument on either side of a support, keeping it safely secured and out of the way until needed by the user.