I don't think "style" is something you rehearse but rather fall in to after an undefined period of time. I still don't know what my "style" is. But my friends probably do. I like to lay back, play along. I personally dread when they turn the spotlight to me and say "Play one, Jay"! But when someone jogs my memory by requesting a song about dogs, religion, politics, snow, or bricklaying, I can usually pull one off to good effect. I guess I'm kind of shy, but get bolder when I recall an old song, especially if it's obscure. I made it a point to never learn how to play "Stairway To Heaven".