Solange Knowles sat down with Rap-Up TV at her Rap-Up cover shoot in West Hollywood, where she was accompanied by her three-and-a-half year-old son Daniel Julez.After striking a pose to the sounds of N.E.R.D. and Björk, the “Solo Star” discussed her favorite song she’s written, the constant comparisons to sister Beyoncé, whether fame has dawned on her son, and what music she’s listening to.