What is fourth of july by sufjan stevens about?

"Fourth of July" is a song by American singer-songwriter Sufjan Stevens, featured on his album "Carrie & Lowell" released in 2015. The song's lyrics reflect on the narrator's relationship with his mother, who is dying of cancer. Stevens sings about memories of his childhood, including past Fourth of July celebrations, and reflects on love, loss, and mortality. The song features minimalistic instrumentation, with Stevens' vocals carried by a simple finger-picked guitar pattern, as well as some electronic sounds towards the end of the track. "Fourth of July" has been widely acclaimed for its emotional depth and poignant songwriting, and is considered one of the standout tracks on the album.