The most famous track off Eccojams and one of the first vaporwave anthems, “A3” samples JoJo’s “Too Little, Too Late” for the majority of the track, the shorter second half being sampled from “Castles in the Sky” by Ian Van Dahl. The track stands out among the other songs on the album for its use of samples from the 2000s as opposed to the 1980s from which most vaporwave songs source their basic tracks.

Its repetition of JoJo’s chorus prefigures the repetition utilized throughout vaporwave, and it is easily one of the most important songs in the genre, providing the model used by many other artists. At over six minutes, it is easily the longest track on the album.