Inner Monologue Part 1 is the fourth extended play by American singer and songwriter Julia Michaels, released on January 24, 2019, through Republic Records.

[3] The EP features songs with "a syncopated rhythm, a jumble of words, negative space, and [...] undeniable hooks".

[4] "Anxiety" features lyrics about mental health "over snaps and a razor-sharp guitar";[4] Paper magazine commented that it has "an upbeat acoustic lick and earworm of a melody" and "the dynamic duo trading cleverly arranged verses about the often-isolating experience of anxiety and depression".

"[5] "Into You" features "stadium echoes, booms and a strobing vibe that strikes just left of Lorde", while third track "Happy" includes Michaels "strained-voice and desperate, break[ing] out of beat to reflect on how writing lovesick songs might affect her life as a whole".

Mike Nied of Idolator commented that the EP "offers another glimpse into the songwriter-turned-superstar's inner workings" and that it is "bookended by a pair of must-hear duets".