Ideas For a Song I Wanna Write?

I Wanna Write A Song Called Santana. It Has A Very Nice Beat But Up To Now, I Have No Idea How To Start It. It's Not A Tribute To The Guitarist Santana But It Can Incorporate Similes Of Him, Like Compare The Song Or Things To Him Or His Style. I Think This Song Could Really Be Great But I Need Something To Start Me Off With. Thanks A Bunch!