You folks are really something; there are so many nice touches in this batch of clues. There’s mattrom’s bark stopper, chrise’s air-guitarist, ab’s saxophonist, bigbad’s stop for tea, stevea’s DJ/mixing/sound, ixion’s wonderful mermaid and “Prove you’re the best one spinning”…I could really go on. I love ginge’s brilliant wordplay (“…wedges, in the name of God Jack…”), but I’m going with therogue’s charmingly apt
South African agreement after "West India" Master boards French sea vessel (10)
Here’s the prize- a bit of modern First World entertainment (no, not busby’s Mr. Methane!). Can you imagine our forebears sailing through thunderstorms for kicks?
https://www.youtube.com/watch?v=NPblvsVKDag&app=desktop
Thanks to all of you. Such a pleasure.