Max Tundra is known to do pretty much everything himself when making his records, as this clip ably illustrates.
From the Pitchfork.tv page:
Brit electro-pop mastermind Max Tundra is but one man. Yet-- through the wonders of four-track recording and digital editing-- he clones himself to pull off all the drums, guitar, piano, keyboard, melodica, vocals and handclaps necessary to nail this antic anthem about digital love.
His last album Parallax Error Beheads You is ace.