A dance-pop song with a retro feel, "Hip" was written and produced by Kim Do-hoon, Park Woo-sang, and Hwasa.
The single was met with positive reception upon release and became a commercial success, peaking within the top ten in South Korea and becoming the group's first number-one hit on the Billboard World Digital Song Sales chart.
Beginning in August 2019, Mamamoo participated in the reality-competition show Queendom, in which six trending female K-pop acts competed for their own comeback showcase to air on South Korean pay TV channel Mnet.
Contrary to previous promotional cycles, the group explicitly focused on choreography, exchanging their trademark handheld microphones for headsets.
[7] Group leader Solar remarked during an album showcase event that the choreography for "Hip" had been their most complex and hardest to learn so far.
[7] While appearing on the KBS talk show Happy Together, she elaborated that this change was inspired by previous criticism over the group not having intricate, demanding dance routines and being self-choreographed.
[18] The group performed "Hip" alongside their Queendom finale song "Destiny" at the 2019 V Live Heartbeat Awards.
[27] "Hip" would later go on to be certified platinum by the Korea Music & Content Association (KMCA) for surpassing 100 million streams in November 2020,[28] earning the group their second certification after "Starry Night" in 2018.