Mighty Music Band is a musical band that The Fresh Beat Band meets in Season 3. My guess is that they are a doppleganger version of The Fresh Beat Band. Not the look-alike type dopplegangers, but they are a band that is similar to The Fresh Beat Band such as personalities, outfits etc. My other guess is that Mighty Music Band members also have names simialr to The Fresh Beat Band. I believe that Mighty Music Band also has 4 band members just like The Fresh Beat Band.