Ever since Moby became basically the first electronic-music rock star in the '90s, he has approached the job with reluctance, refusing to upgrade from his bald-with-horn-rimmed-glasses-and-T-shirt look. For this performance on Radiohead producer Nigel Godrich's show "From the Basement," the DJ is content to be a soft-spoken sideman, strumming an acoustic guitar on his signature hits "Natural Blues" and "Why Does My Heart Feel So Bad?" while ceding the vocals to the superb Inyang Bassey.