In St. Louis, the lines between music genres are blurry. Collaboration shapes every scene — and few embody that spirit like EDM producer Umami, born Pajmon Porshahidy. While many artists resist labels, Umami has no problem pointing out how their sound is directly tied to subgenres of electronic music, hip-hop and R&B. Their latest album “Pajmon” blends their Iranian-American heritage and wide-ranging musical tastes.