Google search does this already. My wife and I were 404-ing on the name of a song which featured a melody on pan pipes (not because we liked it, just because w

Google search does this already. My wife and I were 404-ing on the name of a song which featured a melody on pan pipes (not because we liked it, just because we remembered it from our childhood). I was pretty sure I knew the artist, but couldn't find it on Spotify. She sang the melody into google search, and bingo! Track found.