AU in which stargoth doesn't quarrel over keys and wishes but also doesn't know each other... until Chase, who partecipates as an artist to a project that basically lets people dedicate songs via telephone to their loved ones by choosing a small musician, selecting one of the available songs, leaving the receiver's number in their page site and add a message for the artist to read out before singing the song on the phone if the sender wants to, has to deliver one single song to Nox by calling him.
But Nox hates answering to unknown numers, so he doesn't, and to his contempt the calls just keep going on for days and days, up to the moment he decides to pick up in order to tell whoever the hell it is on the other line off. In the worst way possible. As one does.
Cue some arguing, Chase calling Nox again and again just to sing songs he knows he'll hate with his acoustic guitar, and Nox maybe getting used to the new routine. Perhaps there might even be a proper serenade in the middle of everything.
(The site is not my idea tho, it truly exists. I didn't explain it properly, but it's so well done and the artists are so talented.)