Listen to Kahan Aa Gaye Hum online. Kahan Aa Gaye Hum is a Hindi language song and is sung by Bappi Lahiri, Lata Mangeshkar and Mohammad Aziz. Kahan Aa Gaye Hum, from the album Kab Tak Chup Rahungi, was released in the year 1988. The duration of the song is 8:12. Download Hindi songs online from JioSaavn.