Context: "What Was I Thinkin"' is a song co-written and recorded by American country music artist Dierks Bentley. It was released in April 2003 as the first single from his self-titled debut album. The song became his first number one hit on the U.S. Billboard Hot Country Songs charts in September 2003.\n\nQuestion: who sings the song what was i thinking? Okie... think carefully first, then make a decision:
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The relevant sentence in the passage is: "What Was I Thinkin"' is a song co-written and recorded by American country music artist Dierks Bentley. So, the answer is American country music artist Dierks Bentley.
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