Melanie Martinez’s “Notebook” portrays the frustration that arises from unfulfilling relationships. The song is a message to her partner that she is tired of being neglected and taken for granted. She accuses him of being selfish and not learning the necessary skills to keep her happy, leading her to sacrifice much more than him in the relationship. In K-12, Cry Baby wears a modified version of the K-12 Sleepaway School uniform: she has dyed the pink dress purple and woven flowers through the sleeves. She also wears a Rococo-style dress in the school play, as well as a swimsuit and a dress with a cake skirt later on. The colored side of her hair mostly stays as blonde, but changes occasionally to coral, lavender, and orange. Like Melanie, Cry Baby also has a gap between her front teeth.

Melanie released a feature-film for her sophomore album, K-12, which features Cry Baby as the main character again. Dollhouse", " Pity Party", " Soap", " Mad Hatter", " Carousel" and "Play Date" have also been certified Platinum. In an interview, Melanie revealed that the song was influenced by a personal experience where she sacrificed much more in a relationship than her partner didMelanie thinks the colors baby pink, baby blue, mint green, lilac, and baby yellow describe this album best. [13] It is implied that Cry Baby is likely bisexual, because she thought the love letter she received from Ben was written by a girl and appeared mildly disappointed when Leo, a boy, claimed to have written it. Melanie’s dreamy but dark aesthetic and unique style of writing, singing, and story-telling has garnered her an enormous fanbase. On songs like “Mrs. Potato Head” and “Dollhouse” Melanie comments on issues in today’s society, and on other songs like “Alphabet Boy” and “Cry Baby” she gives listeners a relatable glimpse into their personal life.

Not long after Cry Baby was born, her mother labeled her as "a cry baby" because of her excessively loud crying. Her brother then writes "Cry Baby" on her birth certificate, taking his mother's comment literally. At home, when Cry Baby's mother attempts to feed her, she throws a tantrum and hallucinates her toys coming after her. (" Cry Baby"). On September 6, 2019, Melanie released her second studio album K-12, which was accompanied by her self-directed film of the same name. On September 25, 2020, Melanie released a follow-up EP: After School. On March 31, 2023, Martinez released her third studio album, PORTALS. On July 30, 2014, Melanie Martinez and British singer-songwriter Talay Riley posted two Tweets indicating that they were in the studio along with American record producer Rey Reel writing "the sweetest song". [5] [6] Melatonin is a hormone primarily released at night, and has long been associated with control of the sleep–wake cycle.Cry Baby and the boy, named Johnny, get into a relationship and Cry Baby decides to take their relationship to the next level (" Training Wheels"). I'm exhausted from constantly trying to make things work with you, it's time for you to stop trying Cry Baby's house (Featured in " Cry Baby", " Pity Party", " Sippy Cup", " Tag, You're It", Mrs. Potato Head", and " Mad Hatter") The official audio for the Christmas single Gingerbread Man is also still available on Melanie's YouTube channel