One of my all time favorites and strongly recommended!
HOWEVER you're unfortunately to late.
Ubisoft decided to pull the game whilst shifting the blame over on expiring licenses, rather than renewing and/or patching out the conflicting tracks.

Rocksmith+ became the new focus. An inferior subscription based service designed to milk the consumer, rather than providing you with an excellent piece of software.
$14.99/month, $39.99/3-months or $99.99 for a full year (Real Tone Cable not included btw) is NOT worth the money. You're ''paying for a service'' that is still vulnerable to licensing disagreements, and what happens when people stop paying for this ''service''? I've still got my copy of RS2014, do you think you'll still have access to rocksmith+ at the end of it's support?

May Ubisoft and the music industry choke on all their money, I wish them as much good as they do their own workers and artists.