Psquare 四⽅⾏ is founded in 2016 as a busking band taking to the streets to share their music. Over time, the band grew from primarily busking to playing regular gigs at venues around Singapore and has been highly sought out for wedding and events for local radio stations, RCs, corporate, and private functions.

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The band showcased their original music in Taiwan in 2019 held at Taipei’s Penny University Cafe. Their first singles 《守候寂寞》 released on 15 July 2021 was broadcasted and featured across Taiwan HitFM and Singapore media Yes 933, UFM100.3, Capital 95.8FM and Love 972. They were also featured across various magazines and newspaper media in Taiwan. The song was charted on UFM100.3's Chinese Music Charts, U选1000 in May 2022 at #314 and U选1000 in Oct 2023 at #48 for song release year 2021.