Build a set that flows.1·5·6·4
Every song section reduced to four Nashville numbers, so you can see which songs mash up, which tags land, and how a Sunday moves — from the exhortation through three slots to the send-out.
Lay out Sunday
Drag songs into the 1, 2 and 3 slots. Tags and mashups appear as cards between them, with a match score and the why. Time budget, "lost in the sauce" guardrail, and a printable set list.
Open the builder →Find what fits
Type a song, pick a section, and see exact and fuzzy partners — rotations, near substitutions, tempo and meter notes — plus progression families and a key renderer.
Open the finder →Songs as loops
Chorus, bridge, verse — each a 4-chord loop like 4-1-5-6. Same loop in a different bar (6-4-1-5) is the same family.
Tags vs mashups
A tag needs the exact arrangement; a mashup can flow across a rotation or a near substitution. The apps score both, with tempo and meter weighed in.
Your songbook, in the browser
The Vineyard songbook loads automatically. Edits and plans stay in your browser; export a new spreadsheet whenever you want to keep them.