“In My Head” is the first single from Peters' debut EP, Dressed Too Nice For A Jacket.

Headline Planet described the single as:

…her best release yet. It finds Peters firing on all cylinders. [It] is as sincere and vivid as anything she has written. The lyricism is sharp yet unflinchingly candid and honest. Her vocal is impossibly beautiful, yet rich with tangible heartbreak and vulnerability. The melody and overall production combine to give the song some radio-friendly ‘punch’ without diluting the raw, personal feel.
[It] is a touching, emotional, engaging song [… and] it simultaneously comes across as a credible mainstream pop song and an undeniable Maisie Peters song.