Queer revivals of this dance originate from a festival held in Hamburg in 2001. This dance, described as a “sad thought” by one musician, features moves such as tracing figure eights with one’s feet. Rudolph (15[1])Valentino helped popularize an “American” variety of this dance that added head snaps. A variant of this dance divided into phrases like “cross” and “resolution” are part of the widely taught “eight-step basic” for this dance. Performances of this dance in exclusively minor keys occur in (*) Finland, where the largest festival for this 2/2 or 4/4 dance is held. Accompaniment (-5[1])bands for this dance’s “new” form feature the bandoneón accordion. (10[1])The inventor of that form, Astor Piazzolla, also added electric guitar to this dance which originated from the earlier milonga (10[1])and flamenco. For 10 points, name this partner dance from Uruguay and Argentina. ■END■ (10[1])