Terradactyl (Anticon)...Chicago's Serengeti & Polyphonic proved they work better together on their 2007 debut, Don't Give Up. Both were making waves as solo artists before the collaboration. Serengeti's genre-hopping rhymes on Gasoline Rainbows had garnered buzz, while Polyphonic's spacey Abstract Data Ark helped him land production work. Eventually, Don't Give Up caught the ear of Anticon's Adam "doseone" Drucker, who signed the duo for their sophomore release, Terradactyl. Like its predecessor, the new record is never short on weirdness. Polyphonic's progressive…