Dil Deke Dekho, a 1959 Indian Hindi romantic comedy film, was Nasir Hussains second film as director. His first directorial venture was Tumsa Nahin Dekha 1957, which became a big hit and which gave star Shammi Kapoor a new image as a comedic, dancing hero. Husain and Kapoor reteamed here. Asha Parekh, a former child actress, made her film debut as a heroine. This was also the debut film of comedian Rajendranath younger brother of Premnath. This is also music composer Usha Khannas first film.
Neeta is an heiress, the only daughter of U.K. based Industrialist, Jagat Narayan. She is of marriageable age, and is being wooed by Kailash, Chandra, and Raja. She prefers Chandra over Kailash and Raja, but subsequently changes her mind and falls in love with Raja. Things take a dramatic turn when Jagat and Neeta find out that Raja is not who is claims he is. When Raja defends himself, and calls himself Roop, his very own mother denies this claim, and instead states that Chandra is Roop, her only son. Raja alias Roop must now make attempts to prove himself, and realizes that this is indeed an uphill task.The Soundtrack of the movie was composed by Usha Khanna, with the lyrics written by Majrooh Sultanpuri. Although all the songs are memorable, they seem to have an OP Nayyaresque tinge to them. ........
Source: Wikipedia