I had an acapella jingle recorded by a singer at
http://www.musicradiocreative.com/ for $122.50. I believe the limit is 8 words. It is a British company, so if you listen carefully you may detect a slight accent, but what a bargain. I had them sing my name, call letters, and city. They also do voice over, sweepers, drops, commercials, and more. They were quick, too.