"Hamilton" creator Lin-Manuel Miranda says his son "liked" seeing the critically-acclaimed musical.
"In advance of his 3rd birthday, we look lil man to Act One of Hamilton on Saturday. His comments in this thread..." he captioned a photo of Sebastian, who turns three Nov. 10, onstage.
Miranda subsequently shared his son's reactions to various parts of the musical, including seeing actress Elizabeth Judd portray Angelica Schuyler.
"Alexander Hamilton: 'those stairs need to COME DOWN.' He was very concerned the stairs would not come down. Whew!" the composer tweeted.
"At the climax of Meet Me Inside: 'WHY ARE THEY BOTH WEARING SHOES?' (Maybe because we don't wear shoes inside? I dunno)," the star mused.
Miranda said Sebastian overall enjoyed the production, which won 12 awards at the 2016 Tonys, including Best Musical and Best Original Score.
Miranda shares Sebastian with wife Vanessa Nadal, whom he married in 2010.
He has a number of projects in the works, including serving as a producer on a live-action "The Little Mermaid" movie and a series adaptation of "The Kingkiller Chronicles."