When Jennifer Holliday got invited to sing at next week’s inaugural welcome concert, she says she took her cues from the Clintons and the Obamas in agreeing to perform. Holliday, who backed Hillary Clinton in the election, said she saw the Clintons’ decision to attend Donald Trump’s inaugural and the Obamas’ support for a peaceful transition of power as a signal to “just get this done and then fight vigorously” over policy differences later.