The news page only says that Trisha sang - with a "special appearance" by Garth. I think maybe that means that he was there - and she sang. But I could be very wrong.
Anyways - this is what the news page says:
Toys "R" Us Children's Fund recently hosted its 22nd annual gala in New York City, raising approximately $5 million to benefit children in need. Uniting leaders from the toy and baby products industries for a special evening of entertainment and fundraising, the event was hosted by comedian Martin Short and
featured a performance by GRAMMY® Award-winning sensation Trisha Yearwood, with a special appearance by country music star Garth Brooks. Established in 1985, this annual benefit has raised more than $77 million since its inception and is one of the largest single-night fundraising events held in New York City.
I just wish I could have been there! Wouldn't that have been cool? NY isn't too far from CT . . .