It's called 'Asmaul Husna'.
In remembering Allah, Muslim used to do what we called as Dzikir, which is saying our praise to God in our heart (or with low voice), over and over. Usually Dzikir being do after prayer, but good Muslim do it everytime, everyday and every minutes, so we don't have time to day dreaming, but only remembering Allah.
There are several Dzikir and Asmaul Husna are included. But because there are 99 name to dzikir, people start to turned it into song to made it easy to remember, and there is the reason why we can found several song of Asmaul Husna.
Unless I knew to song of Asmaul Husna, one singing by Sami Yusuf, the British Singer, and the other one singing by Hadad Alwi from Indonesia, and both are in beautiful musics.