^^^Nice way to seize the moment. Interesting website concept. Just a suggestion for the homepage: since the top header is so tall, how about moving the play song links from the bottom of each song-artwork to be a universal play symbol (arrow) overtop the artwork, maybe increasing from translucent to full opacity upon hovering, noting contrast issues with relevant artwork. NOTE: at my 1080p pc monitor and font size settings I dont even see the song title 'above the screen's fold', so you may even want to think about that as well, maybe the same solution as the playbutton using overlay and opacity settings. It is a cool header bg though so dont mess with that, except maybe moving the search box onto it since having it below eats vertical space from the song listings as well.

Last point/question: I'm assuming the $1600 headphone giveaway is for the musicians, not listeners. Good growth tactic but maybe make it more clear OR offer something to listeners as well. I don't know much about the song development process market but maybe implement or communicate something about whats expected/gained from listeners for improving the music (assuming you actually want to help musicians rather than eat their souls lol)

EDIT: minor ui change to song pages: move everything on the separate login page as an embedded form on song pages (above the comments). No need to ask me to click and hope you've integrated with my favorite 3rd party.

EDIT2; Startup based advice: you might want to look into the business model of that site that advertised on thepiratebay using popups autoplaying (fairly decent) music videos of indie artists competing for a prize. Cant remember the name or find it on google, maybe it shutdown? Had a one wordish name derivied from video, definitely started with a V