Mark63

My name is Mark brienza in Jupiter Florida. I am starting a personal chef business. I would like to know if I can use classical and rock music in IMovie videos. A friend of mine said I can use classical music in my videos because it is in the public domain, and I won't get in trouble. Can somebody confirm whether I can I use classical music in my IMovie videos, without getting in trouble. And I also want to put my phone number in the video.Thank you.