A Tribe Called Quest’s classic album The Low End Theory turns 25 today, and Bob Power can’t help but feel like a proud mom — well doula anyway. As the resident engineer at Calliope studios during Low End’s recording, Power was the the sonic midwife in attendance at the birth of one of hip-hop’s most enduring album statements. In fact, considering the pivotal role Power played in a whole host of rap classics — recording with not only Tribe but De La Soul, Black Sheep and Jungle Brothers — it would be tempting to say he was the ultimate fly on the wall for the Native Tongue collective’s greatest period of creativity. But that would be an understatement; Bob Power was the wall — as in wall of sound — providing the ear and technical knowledge to transmute a fertile stack of verses, samples and abstract ideas into a thumping sonic attack that felt like a coherent piece of art.

Getting the chance to hear Power reminisce over The Low End Theory is a special kind of secret history, a journey wherein the landmarks have less to do with the dates of specific sessions or the names of who was in the studio that day, and more to do with moods, sonic signatures and level of funkiness. If you want to know about rap crews and beef, this is not the secret history you are looking for. But read on if you want to learn how the low end was put into the The Low End Theory.

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