Opened in 1900. Ran 9 performances, to about January 1900. The Watch on the Rhine is a play with music in four acts by playwright Sidney R. Ellis. Ellis was also the lyricist for this work which used music by the actor and singer Al H. Wilson who was the star of this show. While technically a play, the work has been covered in musical theatre sources. The play premiered in 1900 and had a long tour on the road which included a stop on Broadway in 1905. The show included 9 songs; the best known of which was the yodeling song "In Tyrol" which was recorded by Wilson in 1906 for the Victor Talking Machine Company and later included in the anthology Music from the New York stage: 1890-1908. Wiki link