When the sun sinks below Red River, great music is on the Hot Summer Nights breeze. The annual free festival turns the entertainment district’s slow season into a seriously FOMO-giving weekend. It’s impossible to see every great act on the lineup, from the iconic Soul Man Sam to the never-before-seen soft silence, gentle noise. If you’re in need of a good-time guarantee, come by the Chronicle’s own partnered showcase Friday. Charismatic indie sleaze duo Almost Heaven and psychedelic noisegazers Witches Exist play, bookended by energetic turntable sets from DJ Garty and Provider, at Kingdom on Friday night. – Caroline Drew