In some of my readings, I come across some passing mentions that Vancouver was a stop on the Grand Tour and that was a contributing factor in it developing a lot of infrastructure for musical performance. But I can't find any information on what the Grand Tour was and where those stops were.
From what I can glean from what my sources tell me, it may or may not have been confined within the British Empire prior to World War 2. Musicians and entertainers would have used this to describe their performances abroad.
And that's all I can guess. What was this?
This source says that this was truly international.
As prohibition ended, the 1920’s and 1930’s saw entertainment flourish. Vancouver became a destination point on the worldwide circuit know as the Grand Tour, which included clubs in Cairo, London, New York, Paris, Rome, San Francisco, Shanghai and Sydney.
During this time, musical theatre thrived in its many forms, thanks in part to the Malkin Bowl in Stanley Park. The resident company, Theatre Under the Stars was a critical success for many years. Its successor in the 1970’s, Theatre in the Park was less popular, however a new company bearing the original name has recently re-established this unique institution in the city’s famous park.
The Grande Tour also brought jazz music to Vancouver relatively early. As the city became home to many of the black customer-service employees of the CPR, an eastside shantytown known as Hogan’s Alley began to develop. Despite its slum reputation and continual police interference, this neighbourhood’s underground music clubs incubated some of the finest session musicians in the country.