Which of the following is NOT a responsibility of a session musician?

The choice that reflects an activity not typically associated with a session musician is promoting their own music. Session musicians are primarily hired to provide instrumental or vocal performance services for recording sessions, live performances, or other musical projects. Their main responsibilities revolve around collaborating with producers, following artistic directions, ensuring a high standard of performance, and maintaining their instruments to deliver the best sound quality.

While session musicians may certainly have their own music they wish to promote, doing so is not part of their role as a session musician. This is distinct from responsibilities like following instructions from a producer, who directs the musical vision, keeping instrumental levels appropriate for the recording mix, and taking care of their instrument, which all ensure a smooth and effective session.