by whom was the music composed?
Raamlaxman
Hum Aapke Hain Koun..!
The soundtrack for "Hum Aapke Hain Koun..!" was composed by Raamlaxman (original name Vijay Patil) who had earlier given music for Rajshri's "Maine Pyar Kiya", with lyrics by Ravinder Rawal and Dev Kohli. 
hum aapke hain kaun hum aapke hain kaun picture It is a 1994 Indian Hindi-language romantic drama film written and directed by Sooraj Barjatya and produced by Rajshri Productions. who is the protagonist? "Madhuri Dixit" and "Salman Khan" play the lead roles. what is the film about? It celebrates the Indian wedding traditions by relating the story of a married couple and the relationship between their families.
wiki:13847916
Hum Aapke Hain Koun..! [SEP] Soundtrack
The soundtrack for "Hum Aapke Hain Koun..!" was composed by Raamlaxman (original name Vijay Patil) who had earlier given music for Rajshri's "Maine Pyar Kiya", with lyrics by Ravinder Rawal and Dev Kohli. It was produced under the Sa Re Ga Ma label which at that time was known as HMV (short for His Master's Voice) and featured veteran playback singers such as Lata Mangeshkar, S. P. Balasubrahmanyam, Kumar Sanu, Udit Narayan, Shailendra Singh and Sharda Sinha. Raamlaxman had about 50 sessions with the director Barjatya during scripting. The finished soundtrack included an unusually large number of songs at 14 (15 if we count the sad version of the song "Mujhse Juda Hokar" which appears in the movie but not on the Music Album), plus the song "Hasta Hua Noorani Chehra" (from the film "Parasmani"), that was used when the characters play a game.