Touring in promotion of their latest album, “How to: Friend, Love, Freefall,” released back in 2018, Rainbow Kitten Surprise – also known as “RKS” – brought their invigorating live set to Houston, Texas. Joining them was opener Mt. Joy, riding the success of a trickle of singles dating back to 2016 and culminating in a self-titled debut album, “Mt. Joy.” Though both groups provided a taste of indie-folk-inspired-rock, each provided its own unique display of influences and performance style.