At the Howard Theatre, the R&B singer Giveon performed in front of a sold-out crowd

He’s still working on that debut album, but in the meantime his latest release, “When It All Said and Done. . . Take Time,” is a collection of his two 2020 EPs, spinning grief into velvet threads of eternal longing. Giveon credits Frank Sinatra and Barry White as musical inspirations, which, along with his mother’s recordings of Anita Baker and Mary J. Blige, reveal ambitions for transcendent vocal recognition. But he is still early in his journey. However, his distinct voice promises attention, with its crystalline foundation and uncompromising timbre.