Mosaic is an a cappella singing group formed in HKU operating on a voluntary basis. The name 'Mosaic' was chosen to capture the very nature of the group; it resembles a picture made up of colored pieces of diversity. Mosaic gathers people who take pleasure in singing, people of different faculties and levels, all carrying with them their uniqueness, their passion for singing, their fantasies of making alive colorful, spirited pieces of music

On DEC 2007 the group has performed in a fund raising concert for Humanity in Focus. More than 200 audiences attended the concert. The fund raised will be used for supporting the Slum School Project in Cambodia.
Besides singing on campus, Mosaic has performed in quite a number of public events like MTR-Living Art, LCSD’s A Cappella Lecture Series, CASHK’s annual concerts, etc. In 2008, the youngsters sang in masterclasses conducted by Chapter 6 (US), Vocaldente (Germany), and The King’s Singers (UK).  They also made their debut  international performance in the 2008 International Contemporary A Cappella Festival in Taipei.

Mosaic是由一群來自不同學系及背景的香港大學學生和校友組成的無侔奏合唱小組，其名字寓意馬賽克藝術中由一塊塊不同顏色、形狀的圖案所拼合的美麗圖畫。懷著年輕人對音樂的熱誠和幹勁，這群年輕人希望能為觀眾帶來精彩、富生命力的音樂。

2007年12月28日，Mosaic為Humanity in Focus舉辦籌款音樂會，出席觀眾逾200人，所籌得之款項將用以支持柬埔寨的教育工作。

除了校內演出外，Mosaic也曾多次在公開場合獻技，包括港鐵的「車站藝術表演」、康文署文化節目組主辦的「無伴奏合唱講座系列」及香港當代無伴奏合唱協會的週年音樂會等。08年，這群「有heart人」分別參與了「第六章」(美國)、Vocaldente(德國)及「英皇合唱團」(英國)的大師班，獲得好評。同年10月，更遠赴台北，在「台灣國際重唱藝術節」中演出。

(Mosaic的官方網站：http://www.mosaichk.org/index.php)