Listen to 半斤八 online. 半斤八 is an Unknown language song and is sung by 許冠傑 and 徐小鳳. 半斤八, from the album 許冠傑-相識廿載演唱會'87 (升級版), was released in the year 2015. The duration of the song is 2:18. Download Unknown songs online from JioSaavn.