Good & Great

In May 2023, Key's agency, SM Entertainment, released an earnings report revealing that he was scheduled to release a new EP in the third quarter of the year.^[2] The EP follows his "retro trilogy" series, consisting of Bad Love (2021), Gasoline (2022) and Gasoline's reissue Killer (2023).^[3]

The EP consists of six songs from various genres.^[3] Lead single "Good & Great" is a dance-pop song with a rhythmic piano melody. The song is aimed at office workers, and contains lyrics about Key taking pride in his work.^[4] "Can't Say Goodbye" is a retro pop song that combines guitar, synths, slap bass and drums to create a "funky" mood. The lyrics are about being unable to say goodbye to someone.^[5] The third track, "Intoxicating", is an uptempo house-pop song about falling in love.^[6] It features rhythmic synth beats, strong 808 bass and "dynamic" vocal melodies composed of alternating low and high notes. "Live Without You" is a dance-pop song containing funk guitar and repetitive bass riffs. It compares trying to erase memories of an ex-partner to drinking alcohol.^[5] "CoolAs" is an English song belonging to the electro-dance genre, containing a low-pitched bassline and synths.^[6] Finally, R&B track "Mirror Mirror" features guitar riffs, whistling sounds and soft synth bell arpeggios. The lyrics, penned by Key, are about his feelings when looking in the mirror.^[7]

Good & Great was announced on August 21, 2023, through the release of a teaser image showing an employee ID badge.^[8] Pre-orders began the same day.^[3] A schedule for promotional content was revealed using the productivity application Notion, fitting the office theme.^[8] Key released a series of teaser videos titled "Work Week", depicting him as a tired employee working in an office.^[9] He launched a website where users could have their own virtual desk and leave each other messages.^[10] The EP was released on September 11,^[11] and Key held a live broadcast to commemorate its release through Shinee's social media accounts.^[12]