Old-timey music like this comes from the piano styles heard in early twentieth-century vaudeville, ragtime and silent films, where a live pianist set the pace for comedy and drama on screen. That association has kept the sound alive online, where creators reuse short public-domain-style piano tunes to give modern videos an instant vintage frame. On soundboards and in short-form video, it has become shorthand for nostalgia, innocence and slapstick mischief, precisely because listeners recognise the style immediately even without knowing a specific song or film.