Or maybe this is the first time you've even heard the song. The moment to take your solo approaches.
Sweat breaks out.
You tense up. People are listening and will be looking at you. For many players, the thought of improvising on stage or even in the presence of others can be a frightening experience. Or maybe you're already experimenting with improvisation but would like to improve your skills. Either way I think you'll find some food for thought and suggestions here that can help you achieve a goal of playing spontaneously.