If you need only one funky vampire theme, make it "The Stakewalk" from the 1972 soundtrack for BLACULA. If you to need two, though, then check out The First Theremin Era's trippy take on Robert Cobert's DARK SHADOWS theme from 1969.
"The Barnabas Theme" is not something Calello lists among his online Billboard credits, though. Interpret that however you will.
The single, backed with a track titled "Sunset in Siberia," was released Feb. 7, 1969. When the official soundtrack for DARK SHADOWS was released a few months later by Phillips, it included a traditional rendition of the series theme. The First Theremin Era version was eventually included in DARK SHADOWS: THE 30TH ANNIVERSARY COLLECTION, released in 1996. It's an interesting anthology and plays more like an audio scrapbook for DARK SHADOWS, rounding out its track listing with a greeting recorded in 1969 by Jonathan Frid for the "Vampire Fan Club."