Billboard has ranked the best performances of the night and named Lady Gaga's performance of TIHTY the best of the night. Sam Smith was ranked the worst.     While not all the nominees for best original song at the 2016 Oscars actually performed on Sunday night, the Feb. 28 ceremony did feature four memorable performances from four A-list artists. Here's our ranking of the Oscars performances. 4. Sam Smith, "Writing's on the Wall" from Spectre Sam Smith's performanc