Chordlist
Lyrics and chords for musicians, stored as plain Markdown.
A lyrics and chords app at chordlist.app. Every song is a Markdown file with frontmatter for the key and capo - see Markdown as a Database for why that matters.
The reader is fast, the library is yours, and transposing a key is one tap. It's the app I wanted at every jam session where someone yelled "what's the capo?".