Well known for the quality of music played: There are very few Disc Jockeys who are popular for the quality of music they play at an event. You would notice that any well known DJ on demand would be popular for the type of music he plays to entertain guests. Since nobody would like to listen to bad music, it is up to him to understand such factors and play music accordingly.
Is open to requests from guests: There are many Disc Jockeys, who are not eager to accept any requests from the guests at a party. These professionals are usually the ones who are not very popular in the market. On the other hand, you would notice that a DJ on demand would always be eager to play the type of music which are requested by guests at an event. These professionals become very popular very easily.
There are many other qualities of a good DJ on demand. The next time you need to hire one, better keep these factors in mind. These would go a great distance in assisting you to find one of the best Disc Jockeys to perform at your party.