I have experienced something similar. Eventually you'll get past it. In the meantime, have you thought about sending some contact email to this musician? How famous is he? If he's not a mega star, it's possible he might write back or even send you a signed photo or CD. That could perhaps be enough.

I adore Bono of the band U2. Obviously he is a mega star. I once had a psychotic delusion involving him. I had it in my mind that if I danced nonstop to all of my U2 CDs, one after another, that he would appear at my door. I was dancing up a storm, getting physically taxed with my mind super racing. Then my door bell rang. That totally snapped me out of my trance, but at the door (through its window), I saw two men in white. I became horrified and left a very scary message on my husband's voicemail accusing him of calling these men to get me. Then I did the same on my psychiatrist's voicemail. The men went away (not sure if anyone was ever there) and by chance my psychiatrist called literally 10 mins later (or so it seemed) giving me an emergency appointment two hours later. Hubby joined me. Hubby had me take an extra dose of some antipsychotic per pdoc, and I calmed down a bit, and my psychiatrist increased the daily dose. I avoided the hospital, but was left feeling a bit depressed soon after that my fantasy was just a delusion and that it didn't come true.

I found a very wonderful quote recently, by Bob Dylan, about his experience with Bono. It helps me know Bono better. The quote is as follows:

"Spending time with Bono was like eating dinner on a train—feels like you're moving, going somewhere. Bono's got the soul of an ancient poet and you have to be careful around him. He can roar 'till the earth shakes. He's also a closet philosopher...talks about the rightness, the richness, glory, beauty, wonder and magnificence of America."
—Bob Dylan, 2005

I don't expect anyone to read it, but over a year ago I wrote about another significant thing relating to Bono and hearing part of one of his songs over and over. Anyone interested can find that at:

MC, Day 3: Surprise song playing in my head – Bird Flight

Maybe give your psychiatrist a call, if you need to. Hugs