Music

Hello, I’ve been screen recording for months and every time I do my music does play. I listen to music a lot and screen record a lot but my internal music doesn’t play. It goes silent, I’m not able to hear it in the background. I’m not sure why my music doesn’t play in the background of the video but it just doesn’t. I have friends who sometimes screen record what they’re trying to show me on their screen while texting and their music is blasting in the background. I’m at a loss on why my internal music doesn’t play but the audio does. How do I get my music to play in the background of my videos?