TOURNAMENT CLARIFICATION: GUITAR SKILL
You are permitted to learn the Guitar skill regardless of Entertainment and Symphonic - you just may not actually play guitar. For example, if you've lifted Education (and possibly Military) you can take a class in the skill. There are similar restrictions for other instruments (ie you can learn the skill, you can't play them).
https://ts3ac.wikispaces.com/Entertainment
https://ts3ac.wikispaces.com/Symphonic