Concentration

[herculesftw]

What are someways to have more than one spell out that both require concentration?

[Piggy Knowles]

Basically, you just need a way to maintain concentration more than once in a round. Swift Concentration (skill trick, Complete Scoundrel), Sonorous Hum (spell, Spell Compendium) and Extraordinary Concentration (feat, Complete Adventurer) are a few of the many ways you can pull this off.

EDIT: Adding sources.

[Deophaun]

Basically, you just need a way to maintain concentration more than once in a round. Swift Concentration (skill trick, Complete Scoundrel), Sonorous Hum (spell, Spell Compendium) and Extraordinary Concentration (feat, Complete Adventurer) are a few of the many ways you can pull this off.

EDIT: Adding sources.
Swift Concentration and Extraordinary Concentration don't work. All that those feats do is reduce the standard action necessary to maintain concentration to a move or swift action. They do nothing to fix the following:

You can’t cast a spell while concentrating on another one.

[Piggy Knowles]

Fair enough. Sonorous Hum should still work, though. And I would imagine Familiar Concentration, which lets your familiar concentrate for you, should work as well (although without looking at the text of the feat I couldn't swear to it).

[Deophaun]

Familiar concentration would work, because you are no longer concentrating on a spell, your familiar is.

[Allanimal]

What are someways to have more than one spell out that both require concentration?

Get 10 levels of Spirit Shaman (Complete Divine, p.14) and you can do it no problem!

[herculesftw]

So, lets say I cast sonorous hum, and I have familiar concentration. . . If I swift action(master specialist conjurer rapid summoning variant) twin cast summon elemental monolith, the first monolith would be concentrated on by the sonorous hum, and I could then transfer my concentration to the other monolith with my familiar. Two monoliths and I can act freely under these circumstances corrrect?

[Deophaun]

That should work.

[herculesftw]

awesome. . .wanted to basically in one round have two elemental monoliths and 4 colossal fiendish spiders out. Sonorous Hum has a 1min/lvl duration so have that on prior to the fight. 1st cloistered cleric/3rd conjurer/10th specialist conjurer/5th malconvoker/1st paragnostic apostle. use divine metamagic twin cast to twin cast the elemental monoliths as a swift action, and standard action twin cast the spiders, 4 total because of the 5th lvl malconvoker ability. Thanks guys! That's a lot of monsters to act on their own lol. I'd have to get the feat obtain familiar though lol