Masha'Allah this is a beautiful nasheed song by brother Kamal Uddin. One of the best parts about it is that the dear brother does not use music as so many nasheed artists do. Astagfur'Allah.
Hadith - Bukhari 7:494
Narrated Abu 'Amir or Abu Malik Al-Ash'ari that he heard the Prophet (peace be upon him) saying, "From among my followers there will be some people who will consider illegal sexual intercourse, the wearing of silk, the drinking of alcoholic drinks, and the use of musical instruments as lawful.
The Prophet (peace be upon him) said, "At every womb Allah appoints an Angel who says, 'O Lord! A drop of semen, O Lord! A clot. O Lord! A little lump of flesh." Then if Allah wishes (to complete) its creation, the Angel asks, (O Lord!) Will it be a male or female, a wretched or a blessed, how much will its provision be, and what will its age be?' So all that is written while the child is still in the mother's womb."