This is a great place to get daily tips and ideas on chord progressions and song writing ideas to keep you fresh.

http://www.secretsofsongwriting.com/

I have this bookmarked, and I also bought his books. They are very good.
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David Snyder
Audiophile Everything + Studio + Instruments + Fingers
ASCAP, NSAI

www.davidsnydermusic.com
www.reverbnation.com/davidpsnyder
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www.songtradr.com/user/profile/david.snyder