UG meaning in Academic & Science ?

Underground Garage is the name shared by two related but different radio outlets, a syndicated show and a satellite radio station, both created and supervised by American musician Steven Van Zandt (best known as a guitarist in Bruce Springsteen & The E Street Band) to present rock 'n' roll and garage rock on radio. Both outlets play a mixture of garage rock both old and new, and the music which influenced today's garage rock. On both the Sirius XM channel and on the syndicated show, one song is regularly proclaimed as "The Coolest Song in the World This Week."