I am developing a platform where users can search songs by BPM and Key.
The only thing that came to my mind is: can I show songs' titles and authors after the user does a search, without violating the copyright of the song and its author?
The platform is a commercial project, so I'm earning money through users' monthly subscriptions to the website. I am not earning money from the songs themselves, since I'm showing just the title, author, BPM, and key of the song, without letting the user reproduce it or listen to it in any way.
I know songs' titles do not have copyright, but does the combination of song title + author have it?