Name: SEBii + kimj + Billionhappy + Chalky Wong & CLAIR | Tumbalong Nights
Start: 2026-05-29T08:00:00
End: 2026-05-29T12:00:00
Location: Tumbalong Park

Tap into Asia’s underground post-hyperpop scene with four fast-rising artists – Chinese rappers SEBii, Chalky Wong and Billionhappy, and Korean-American...

Location:

11 Harbour St
2000 NSW
Australia

Venue:

Tumbalong Park

Price:

Free

Tumbalong Nights: Billionhappy, SEBii, Kimj, Chalky Wong & CLAIR

Featuring

Billionhappy

Billionhappy (Han Yi) is an underground Chinese rapper from Anhui, based in Shanghai. He has released several albums, working producers Effie, jackzebra, Mechatok, kimj, Bloodz Boi and Ninajirachi.

He's also the leader of Shabby Club, a collective of Chinese producers and rappers that mix local online subcultures with global underground sounds, including hyperpop and cloud rap.

SEBii

SEBii (Sebastian Yang DeMarino) is a Chinese rapper and producers born in Shanghai and based in New York. Redefining the boundaries of hyperpop and internet rap, he's known for his glitchy sounds, versatile vocals and building a complete universe around his music's mascot VV.

kimj

kimj (Jaehyun Kim) is a Korean-American music producer and songwriter born in Busan, South Korea. As a producer, he has worked with artists NBA Youngboy, glaive, 2hollis, Rod Wave, Billionhappy and more, and also has several solo albums.

CLAIR

Chinese/Mongolian artist CLAIR is a trance-pop producer and musician based in Melbourne, who runs event series Celestia.

With a background in classical music, she mixes traditional instrumentation into dance music and ethereal soundscapes, as heard on debut album Movie.

Chalky Wong

From Shenzhen and now based in Shanghai, rapper Chalky Wong is one of China’s emerging underground stars, and a member of hip hop collective Dark9Community. With a blend of sharp lyrics and engaging charisma, he achieved viral success with his 2025 hit ‘Regular Rappers’, and was celebrated by The Face as one of the major voices of “Nu China” rap.

Event Details

Tap into Asia’s underground post-hyperpop scene with four fast-rising artists – Chinese rappers SEBii, Chalky Wong and Billionhappy, and Korean-American artist and producer kimj. 

Drawing from cloud rap, 2010s EDM and East Asian pop, they all represent a new wave of genre-blurring artists reshaping the region’s underground sound. Shanghai rapper Billionhappy is a leading voice in the city’s Shabby Club collective, known for blending maximalist electronica, Chinese melodies and blown-out 808s into huge, irreverent tracks, and recently collaborating with Australia’s own Ninajirachi.

Fellow Shabby Club member SEBii has built a cult following online with his high-energy rap style, fusing cloud rap, hyperpop and club production into chaotic, internet-native tracks that move between underground rap and electronic music.

Korean-American artist and producer kimj is a forward-thinking figure in global electronic music. Working across the electronic and alternative space, he has collaborated with artists including 2hollis, nate sib and Effie, playing a key role in a new wave of genre-blurring production emerging across international scenes.

The three artists recently collaborated on the EP 潮 (Chao) - a fast and furious eight-track project riffing on the sounds of 2010s EDM. They’ll also be joined by fellow Shanghai rapper Chalky Wong, an electrifying member of hip-hop group Dark9Collective and a frequent collaborator of SEBii and Billionhappy.

Supporting the night, Melbourne Chinese-Mongolian artist CLAIR opens with a live set of ethereal trance-pop, weaving obscure samples with her own glitched-out vocals.

Free for all to enjoy, Tumbalong Nights ignites Darling Quarter's Tumbalong Park with 23 nights of music during Vivid Sydney, with a cross-cultural lineup of live music from international legends, Australian icons, emerging stars, plus DJs.