A visualization of the four final "master" tracks - Deconstructing Sgt. Pepper (SLYT) (via OpenCulture.com (so not really single link anymore, is it?))
Here's an amazing multitrack a capella cover of Stevie Wonder's I Wish by Yeo Inhyeok. [slyt | previously | via]
Entertaining video tutorial [Youtube, 10 min] of an iPhone app called Everyday Looper, a four-track audio recorder and mixer. (bonus track)
Multitrack a cappella (mostly) videos feature the same person layering multiple harmonies to sing a song. The results can be incredible: "Thriller" in 64 voices, "You Rock My World" in 38 voices, "Baby on Board" from the barbershop quartet episode of The Simpsons, "Swing Low, Sweet Chariot", falsetto-tastic "Amazing Grace", "Poker Face", ... [more inside]
Single Japanese Male. Rather than yammering in Meta about what "best of the web" means, let's have an object-lesson in astonishing obscure excellence. Introducing every last one of you to the Virtual Wilbye Consort.