Observed arrival · 2026-09-21
Rina Piano’s 200,000-Piece Piano Catalog
A searchable piano library where visitors can inspect scores, listen to pieces, and hand them off to an app for guided practice.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Piano learners browsing unfamiliar repertoire
- Worth noticing
- The catalog includes arrangements ranging from 23-bar birthday songs to a 504-bar Beethoven movement.
Field notes
The homepage combines a public browser catalog with a separate practice workflow. Examples expose the range and granularity of the collection: a very easy 23-bar birthday arrangement sits alongside a 504-bar Beethoven movement, while game music and pop appear beside canonical repertoire. The app is described as accepting photographed pages and MusicXML, then separating hands, slowing passages, and guiding the player key by key.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue