The word nasheed in Arabic means raising the voice when reciting verse and making the voice sound beautiful and gentle.
There are conditions to which attention must be paid with regard to this matter:
Not using forbidden musical instruments in nasheed.
Not doing it too much or making it the focus of the Muslim’s mind, occupying all his time, or neglecting obligatory duties because of it.
Nasheed should not be recited by women, or include haraam or obscene speech.
They should not resemble the tunes of the people of immorality and promiscuity.
They should be free of vocal effects that produce sounds like those of musical instruments.
They should not have moving tunes which make the listener feel “high” as happens to those who listen to songs. This is the case with many of the nasheeds which appear nowadays, so that the listeners no longer pay any attention to the good meaning of the words, because they are so entranced by the tunes. And Allaah is the Source of strength.
Fath al-Baari, 10/553-554-562-563
Musannaf Ibn Abi Shaybah, 8/711
Source: Islam QA