Over the course of 1928, as Warner Bros. began to rake in huge profits due to the popularity of its sound films, the other studios quickened the pace of their conversion to the new technology. Paramount, the industry leader, put out its first talkie in late September, "Beggars of Life"; though it had just a few lines of dialogue, it demonstrated the studio's recognition of the new medium's power. "Interference", Paramount's first all-talker, debuted in November. The process known as "goat glanding" briefly became widespread: soundtracks, sometimes including a smatter of post-dubbed dialogue or song, were added to movies that had been shot, and in some cases released, as silents. A few minutes of singing could qualify such a newly endowed film as a "musical." (Griffith's "Dream Street" had essentially been a "goat gland.") Expectations swiftly changed, and the sound "fad" of 1927 became standard procedure by 1929. In February 1929, sixteen months after "The Jazz Singer"'s debut, Columbia Pictures became the last of the eight studios that would be known as "majors" during Hollywood's Golden Age to release its first part-talking feature, "The Lone Wolf's Daughter". In late May, the first all-color, all-talking feature, Warner Bros.' "On with the Show!", premiered.