I memorized the lyrics of “strange clouds” by B.O.B. so maybe. It might be different for different people though…
Yes, you can, as long as it’s possible in waking life.
You can dance or play another instrument or doing any realistic skill by practicing it in your lucid dreams or apply knowledge in real life that you learnt in your dreams. But obviously, you can’t fly, use magic, shapeshift or teleport.