Pierre Slamich

Their iOS version is just awesome. The Android version is good, but still lacks some of the bells and whistles. Pros: The synchronized partitions, the number of singing partitions Cons: More features on Android

Not just for instrumentists, I use it for singing opera pieces, or Lieder :-)

We've just reached 100K products in 177 countries, and we have a celebratory blog post: https://news.ycombinator.com/item?id=12659525

I've had the chance to try them on at en event in Paris. Very nice execution on something I've been wanting ever since I outgrew those child strap-on skates. Cool to see they are now available.

Does anyone know of a similar product for webpages (possibly including video and animations) ?