Lil Nas X is letting fans into his world.

The musician’s new HBO documentary Lil Nas X: Long Live Montero was released Saturday, and the film offers a fly-on-the-wall look into his first-ever concert tour as well as insights about his upbringing, family dynamics, views on religion and more.

Co-directed by Carlos López Estrada and Zac Manuel, the documentary features interviews with Lil Nas X, 24, as well as footage of family members including his father, stepmother and brothers, all of whom speak about watching the performer (born Montero Hill) go from young child to massive superstar.

Below, here are five major revelations from HBO’s Lil Nas X: Long Live Montero.

il Nas X wanted to be a surgeon before he started making music in college

Reflecting on his pre-fame ambitions, Lil Nas X revealed he thought about going into healthcare before launching into music. “When I was a kid, I was like, ‘I want to be a surgeon.’ I wanted to be a cardiovascular surgeon ‘cause my grandmother and a lot of family members had heart problems,” he said in the film.

Once he began attending college, however, his thoughts changed. “I got, like, so immediately bored, I made a song for fun and immediately posted it onto Twitter,” recalled the Grammy winner. “I told my parents, ‘Oh yeah, I’m just gonna take a semester off.’”

The same year, Lil Nas X’s grandmother died, which led him further into music. “I’d never had somebody close to me pass, and my grandmother had passed. That’s when I started getting bad anxiety attacks and s— like that, and then I found music,” he explained. “I feel like music was also great for escaping that. I felt a f—ing spiritual presence over me, that [said], ‘OK, this was not a mistake. This is what I’m supposed to be doing in life.”