The performance happened days earlier, but spread widely later in the week after a video highlighted the reveal of Ronald as the singer.
The report frames it as another quirky baseball mascot moment, following recent McDonaldland-themed appearances such as Ronald's first pitch and Grimace's earlier baseball buzz.
After conquering baseball, what surprising cultural stage will a McDonaldland character take over next?
Is McDonald's nostalgia marketing a brilliant revival or a creative bubble destined to burst?