My first thought - as quickly as it took me to realize this was a tango titled "First Blood" - was of Tom Lehrer's "The Masochism Tango." Obviously, not even remotely the mood you were going for. I'm not entirely sure how "first blood" relates to the subject matter of the song here. Blood as a metaphor for sex? I suppose it works, but I've never really heard it put that way, and it feels awkward. Anyway, what does work here is the instrumentation. I love the accordion plays against the stringed instrument (is that a ukelele or a flamenco guitar being played in the higher registers?), and the percussion is masterful. It all combines into a song that feels richly layered in spite of its minimalist arrangement.