Composing music for creative commons

I've been working on some instrumental music lately, building up a portfolio to send around in the hope that companies might want to use my music for TV, games, or other media.

To do this, it would be good to get a name for myself and actually get my music used on some things first before trying to work as a paid composer.

So, I've been thinking along the lines of releasing some music under a creative commons license, which would freely allow people to use my music for their personal or commercial projects without having to get permission or pay royalties.

Could this approach work, or is it the daftest idea I've had yet?

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