What happens if the Engineer solos a Mix Master during a show?

When an engineer solos a Mix Master during a show, they are specifically isolating that mix to listen to it in detail. In this context, hearing the settings of the Graphic EQ means that the engineer can assess how the different frequencies are being adjusted.

This soloing action allows the engineer to make adjustments and ensure that the mix is balanced and optimized for the audience's experience. By hearing the settings of the Graphic EQ, they can identify any potential areas that may need enhancement or reduction, which is critical for achieving the desired sound for the performance.

Other options do not accurately reflect the functional purpose of soloing a Mix Master. Hearing only vocals, not hearing any effects, or only hearing the backing track would limit the engineer's ability to fully assess the overall sound mix they need to adjust. The focus of soloing is on providing a complete picture of the mix, particularly the impact of frequency adjustments provided by the Graphic EQ settings.