AH, heh. Sorry.
Melodyne is freaking BRILLIANT SAUCE with an extra serving of AMAZING.
It analyzes loops, or even entire songs, and pulls apart the notes, detects the keys, lets you rip out, for example, just the vocal bits, you can change the key of loops completely, from major to minor, shift it around, add additional notes using the actual sounds that the original artist was playing (their real voice or guitar strum), etc., etc., etc.
It is SUPER COOL.
It also does key detection, and I am inclined to think it would be the most accurate at guessing keys, but I haven’t done a comparison myself.
It is worth pointing out that it is brilliant, but very complicated and a lot of work to use – it’s not a silver bullet. However, it is real nice when you are producing with loops and you have a loop you want to use that’s in the wrong key. However, it loses effectiveness for dense songs – it detects pitch ranges, NOT instruments, so if multiple instruments are playing the same note (say, A4), then it can’t rip them apart.
