The England midfielder brought his personal touch to Vanilla Ice’s “Ice Ice Baby”, chanting “Rice Rice Baby”.
Moyes may have been the only man in the West Ham camp who didn’t hear the clip.
“Was he? I don’t social media at all,” the Scot said when asked if the song was sung on the plane to Vienna on Wednesday.
“It’s a very good tune. Training. Rice, rice, baby.
“For me the most important thing is that Declan is a football player who prepares himself and devotes himself to his job. I guess he has no plans to become a karaoke singer, if that’s it. that it is, in the future.
“But overall he’s a really good one, a good guy to have around. I know what you’re putting on it, so as long as he’s in control I’m happy.
“I really want people to talk about Declan Rice for his football. That’s what I want to be talked about about him. I’ve been asked a few questions on social media and what’s going on with that – the truth is I’m not really that interested.
“I’m only interested in how he plays for us, how he trains, how he plays for England, all of those things are much more important to me.”