Lady GaGa has spent about 10 hours yesterday at a recording studio in Los Angeles. The singer is working on a duet with Cher, titled “The Greatest Thing”, it is set to be Cher’s lead single for her 26th studio album dropping later this year. They were working with Gaga’s longtime friend and producer RedOne. The singer was spotted in a long black dress and with sunglasses (photo above).
Photo: Courtesy of Gagadaily.com/X17Online.com