Otto Abels Harbach, born Otto Abels Hauerbach (August 18, 1873 – January 24, 1963) was an American lyricist and librettist of about 50 musical comedies. He is most remembered for being Oscar Hammerstein II's mentor and was one of the first librettists to believe that songs should be woven into a show, not just placed there. He is also considered one of the first great lyricists, because most of the others were considered hacks. This was because the shows usually didn't care about lyrics, just the music, the costumes, and the stars. Some of his more famous lyrics are for "Smoke Gets in Your Eyes", "Indian Love Call" and "Cuddle up a Little Closer, Lovey Mine".