If you are the only Troubador on the raid:
Debuffs to maintain at all (most) times: Spell Rebuff, Dispirited Processional.
If you don't have a dirge: Add Devigorating Discante to the list.
Set up 5 (yes five) Jester's cap macros, first one is for yourself, other 4 are for the people you will have in your 'rotation'. The rotation is used when JCap is up and no one has asked for it, usual suspects include assasins, brigands, wiz-locks. Also go to
EQ2Interface (someone confirm?) and get the mod for your raid window. On tough pulls, think about Capping a healer or the MT.
After that (assuming I haven't missed anything stupidly obvious) you DPS.
As for buffs... that will depend on who is in your group, and also how good your raid is. My personal setup is usually: Aria of Magic, Allegretto, March of Blades, Fortifying Song, Alin's Serene Serenade. Then I have my last slot as a swap between Song of Magic, Power Ballad (usually only for names) and any resist songs required for the encounter.
Soloing: Get the Incarnadine Melodic gear if you're still wearing T7 gear. A whole set of it. Other notable items to get: INT/STR/AGI mastercrafted rings. Anything with spell crit or +spell damage on it... I find I can hit red-cons quite reliably with my spells, but CAs and weapons are about 60% hit rate on Orange cons and pretty much miss every swing for Red cons. So focus on your spells. I'm a fan of the STA line (4-4-8-8), but it wont help you much for raiding and unless your guild raids T7 still, you'll have a hard time finding a good roundshield. Also I play on PvP, so my spec reflects that.
Have fun! (Thats the main idea right?)