Originally planned as a venue for short dramatic plays, the early shows at the Princess failed to attract an audience. Even so, some of these plays found success elsewhere. For example, ''
Hobson's Choice'' (1915) played well in London the following year and became a success on film. Theatre agent
Elisabeth Marbury was tasked with booking the theatre to improve its fortunes and approached young
Jerome Kern, who suggested a collaboration with
Guy Bolton, to write a series of musicals specifically tailored to its smaller setting, with an intimate style and modest budgets. Kern and Bolton's first "Princess Theatre musical" was
Nobody Home (1915), an adaptation of a 1905 London show by
Paul Rubens called
Mr. Popple (of Ippleton). The show was notable for Bolton's realistic take on courtship complications and Kern's song "The Magic Melody", the first Broadway showtune with a basic
jazz progression. Their second show, with
Philip Bartholomae and lyrics by Schuyler Green, was an original musical called
Very Good Eddie (1915). The little show ran for 341 performances on a modest budget then toured into the 1918–19 season. British humorist and lyricist/playwright
P. G. Wodehouse had supplied some lyrics for
Very Good Eddie but now joined the team and collaborated with Kern and Bolton at the theatre for
Oh, Boy! (1917), which ran for 463 performances and was one of the first American musicals to have a successful London run. According to Bloom and Vlastnik,
Oh, Boy! represents "the transition from the haphazard musicals of the past to the newer, more methodical modern musical comedy ... the libretto is remarkably pun-free and the plot is natural and unforced. Charm was uppermost in the creators' minds ... the audience could relax, have a few laughs, feel slightly superior to the silly undertakings on stage, and smile along with the simple, melodic, lyrically witty but undemanding songs". Next, the team wrote
Oh, Lady! Lady!! (1918). Two other shows,
Leave It to Jane and
Have a Heart, were written by the three in 1917 for the Princess but presented elsewhere. wrote a verse in praise of the trio that begins: :This is the trio of musical fame, :Bolton and Wodehouse and Kern. :Better than anyone else you can name :Bolton and Wodehouse and Kern. Kern's importance to the partnership was illustrated by the fate of the last musical of the series,
Oh, My Dear! (1918), to which he did not contribute. It was composed by
Louis Hirsch, and ran for 189 performances: "Despite a respectable run, everyone realized there was little point in continuing the series without Kern." Musicals by other teams followed at the theatre, but without especial success. ==1920s==