We have seen plenty of biographical films of music legends; some of them good and some not so good. The best performances by an actor (male or female) made you forget that the actor was playing a role – they played the part so well that they became their subject. This is especially true when the actor sings and/or plays an instrument in their portrayal of a real life figure. Those of us that play instruments notice and appreciate when we see that such an actor can really play a guitar or piano; not just pretend to play. Not every actor is able to take their performance to such an extent, but when it happens, it makes them more believable in their role as a well-known musician.