You're having a jam session with your friends. When you look up song chords, every search result comes up with ugly, non-mobile-friendly sites.
This is a plea for Genius.com to help bring song chords into the 21st century.
Given their strong community of contributors, it'd be reasonable to imagine that some users would be willing to contribute chords, so others can learn how to play the songs.
Here's a prototype of this idea, along with some related diagrams.
I tried to find a toggle on their website, to conform to their current design, but I came up empty handed. I decided to pick Google's Material Design toggle slider, as the Genius design somewhat resembles Material Design with its flat, block-oriented UI elements, as well as its bright colors. (The purple used in this post is similar to the pastel purple used on Genius.com)
I would've liked to have built an animated .gif of this animation, but this diagram will do for now. Basically the chords (purple) ought to slide out from underneath the lyrics (grey), with an "ease in" behavior for both opacity and position.
In addition to the animation helping the users to make sense of the relationships between the chords and lyrics, whitespace helps to separate chord/lyric pairs from one another, to reduce confusion.