With this second-half installment of our Austin City Limits Music Festival 2015 (ACL Fest) recommendations the emphasis is on the middle-tier acts booked. To our sensibility that is where the gold is found. A good example is TV on the Radio who played an exceptional Lollapalooza set last month. The group was booked on a second-tier stage at sundown. Their performance was spellbinding. They may not get the attention of acts like the Foo Fighters but they get plenty of respect from musicians and hard core music fans. The bulk of our recommendations reflect that sentiment.