Ever have a dream where you hear music that doesn't exist?

No,I can't say that I have

I don't think so.

I have had dreams that were entirely in Korean a couple of times before though...... and I don't speak Korean :v But that would be due to not hearing anyone around me talk and only surrounding myself with Korean dramas and shows for several days in a row.

A couple of times I have dreamed where I heard really cool lyrics to an non existing song, but I can never remember them

Yeah. Only once, and I can't remember the words, but I remember it was really weird because a monkey was singing it...

the only thing i remember hearing in my dreams are piano sounds

Yes..very often. One time I heard a song in my dream. The title is "Only one". The genre is RnB I think. It sounds like a song from Natalie " I love you so". It is sung by unknown female singer and the music video was like from Step-up movies where the dancers are dancing in a studio doing rehearsals. Later on, I make a cover of that song and posted on my social media accounts. In my own music video, I was like dancing in the studio together with my back up hip hop dancers while I am singing that song. I feel confident in that video like I was a pop star. I got so many views. My family and my friends couldn't believe it that I will become a superstar because of that music video that I made. They were so proud of me. My crush has also seen it and commented on that " I think I'm in love with you. You're a star now. You look great. I just want to keep on playing this music video over and over again cause I can't stand myself without hearing your voice and seeing you like this" then I replied "Oh thank you. I am so flattered by your comment". I thought I was never dreaming until my phone rang to wake me up.

Yes in 1 month iv'e expreinced it more like 3 or 4 time .
the song that i heard in my dreams sound so damn good but when i wake up i forgot what song & what kind of beat i heard in my dreams 😩