"Hot-House Rag" is a lively ragtime piano composition by Canadian musician Paul Pratt. As one of the few Canadian composers to achieve success in the ragtime genre, Pratt's work shows the influence of classic American ragtime while incorporating his own distinctive style. The piece features the characteristic syncopated rhythms and melodic patterns of ragtime, likely composed during the genre's peak popularity in the 1910s-1920s. Pratt, who was also a skilled clarinetist and conductor, contributed significantly to Canada's musical landscape during this period.