Abstract: Systems and methods for providing side-channel communications to supplement a shared communication channel are provided. Participant devices within a side-channel communication group are configured to receive a first audio stream associated with the shared communication channel and a second audio stream associated with the side-channel communication group. A host platform or a participant device may mix the first and second audio streams to produce a composite output audio stream that enables users to listen to both audio shared to shared communication channel and audio generated by other members of the side-channel communication group.