Movie Stars that can handle musical instrument well

Not enough to be “triple threats” (act/sing/dance) in show business, they were pretty good instrumentalists as well:

https://youtu.be/baHH2Kqz1SQ

https://youtu.be/7bYvZEpHEMA

And, of course, an Academy award nomination for “Best Actor” makes one a movie star by any standard. He was inarguably a star as an instrumentalist. Some might even argue, the best tenor saxophone player of all time:

https://youtu.be/gIYV5kIdK9Q

Taking the twist on the OP a bit further, star instrumentalists who could handle a little acting:

https://youtu.be/YtjzVThkiFs