Now it is the Blues and he is so skilled, he made the final stage at last year's International Blues Challenge.
His new album is It's My Guitar and it is filled with some stellar songs and wonderful guitar playing.
Castro and I sat and chatted about his long career in Gospel music, which continues as he explores his blues roots.
He talked about getting into the blues to find a new path and his journey to Memphis and how he is going to try and do it all over again.
We checked out some tunes from the album during our chat.