There's more than one artist using the name of JDA:
[p]
[p]South London-born musician, JDA, is a singer, writer and producer. With radio play and support from both BBC Introducing and Reprezent Radio behind her, JDA, a DIY artist in every sense of the word, has recently announced the release of her third single 'Sublime', a melancholy follow up to her previous distinctive singles that have already made waves. Self-producing, writing and recording all of her material, JDA, is a one-woman show, a creative force to be reckoned with.

2) JDA - An American band.

3) J.D.A. - A dutch hardcore DJ. [p]This artists name is misspelled and must be spelled as a shortening with dots: J. D. A. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.