to gather with?

[minnie2007]

Is it possible to sayHe had new occasions such as gathering, in London, with other piano players……….

[BobK]

Is it possible to say He had new occasions such as a gathering, in London, with other piano players……….

... and 'new occasions' sounds wrong. People don't normally have occasions, except in very archaic writing, with the meaning "chance/opportunity"*. Do you mean this, or "events" (or something else)?

b

*PS Also, there's a collocation (known among Roman Catholics, but not in widespread use!) - "occasion of sin" [where it means "morally risky situation"]