Pro Tools, and other ways of editing performances, correcting mistakes and compiling the best of multiple takes together have been around since well before the turn of the century. But as only the most old-fashioned and retro-minded producers hold onto the old ways of doing things, two-inch tape and Neve recording consoles become scarcer and more expensive. You almost have to be a rich, passionate rock star like Dave Grohl or Jack White to continue recording analog. Meanwhile, the appropriately named GarageBand has been part of the DIY revolution in home recording.