Conditions of nasheed being permissible

The guidelines and conditions of permissible nasheeds:

By studying the words of the scholars and trustworthy Shaykhs we may compile a list of guidelines and shar’i conditions which must be fulfilled for the nasheed to be permissible. That includes:

1. The words of the nasheed must be free of haraam and foolish words.

2. The nasheed should not be accompanied by musical instruments. No musical instrument is permitted except the duff for women on certain occasions. See the answer to question no. 20406.

3. It should be free of sound effects that imitate musical instruments, because what counts is what appears to be the case, and imitating haraam instruments is not permissible, especially when the bad effect is the same as that which happens with real instruments.

4. Listening to nasheed should not become a habit which takes up a person’s time and affects his duties and mustahabb actions, such as affecting his reading of Qur’aan and calling others to Allaah.

5. The performer of a nasheed should not be a woman performing in front of men, or a man with an enchanting appearance or voice performing in front of women.

6. One should avoid listening to performers with soft voices who move their bodies in rhythm, because there is fitnah in all of that and it is an imitation of the evildoers.

7. One should avoid the images that are put on the covers of their tapes, and more important than that, one should avoid the video clips that accompany their nasheeds, especially those which contain provocative movements and imitations of immoral singers.

8. The purpose of the nasheed should be the words, not the tune.

There follow some of the comments of the scholars which include the guidelines and conditions mentioned above

----------------------------------------------------------------------------------
for detail and complete Ruling
http://islamqa.com/en/ref/91142/nasheed.