Rocksmith is a music video game produced by Ubisoft.
The game's main focus is the unique feature that allows players to plug in virtually any electric guitar and play.
SpecsUpdate
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Pros
Pro Receive live feedback
Unlike learning songs from YouTube or tabs. Rocksmith will give you feedback there and then when you play the song and will adjust the difficulty accordingly.
Pro CLDC for a vast vast selection of songs
While lacking your favorite song can be a con, if you dig around you will probably find a Custom DLC for so many songs and it's easy to add them to the game without too much hassle.
Pro Guitarcade
Kill zombies by playing chords, practice scales in a beat'em up this and more can be done in Rocksmith's Guirarcade. Once tedious tasks became something exciting (especially scales) once you pick up this piece of software.
Pro Turns learning into a game, making it fun
With Rocksmith 2014 you can learn how to play a real guitar through a Guitar Hero-type game.
Cons
Con Official DLC can be pricey
If you are a fan of a vast variety of music you can end up with huge cart that can easily get into hundreds of pounds. The price per song is definitely more that your usual iTunes or Google Play price.
Not that many good bundles either.