What classes with rage abilities can a Skald multi-class into?

Question

Can a skald multi-class into something else that gives a rage ability. If so what? Supposedly it can based on the text

From the bottom of Rage Powers (Ex)

If the skald has the ability to rage from another source, he can use his skald rage powers during that rage as well

I have heard that the skald cannot multiclass into a barbarian (or bard) since it is one of the parent classes of this hybrid class. Or rather a hybrid class cannot multi-class into one of its parent classes.

So then could it multi-class into Blood-Rager?

Answer 1

Skalds can multiclass into any other base class.

From the PRD or PFSRD:

Each of the following classes draws upon two classes to form the basis of its theme. While a character can multiclass with these parent classes, doing so usually results in redundant abilities. Such abilities don't stack unless specified.

So a skald could have rage from multiclassing into barbarian (regular or unchained, but not both) or bloodrager.

Skalds might also multiclass into a prestige class that grants rage.

While there aren't many, some prestige classes do exist that grant rage or additional rage. Examples include the Rage Prophet and Furious Guardian.