The 2015 album "4 Walls" saw f(x) fully lean into a sophisticated, mature synth-pop sound, exploring themes of obsession and fractured relationships. The release marked a significant artistic evolution for the group.
- The album's title track, "4 Walls," reached number two on South Korea's Gaon Digital Chart.
- "4 Walls" was the first album released by f(x) following member Sulli's departure from the group.
- The album was praised by critics for its cohesive sound and artistic depth, further cementing f(x)'s reputation for experimental concepts.
The Seoul-based girl group f(x) debuted in 2009, known for their experimental synth-pop and eclectic concepts. At the time of "4 Walls," they were navigating a more mature sound and a temporarily reduced lineup.
Tracklist
