From Wiki:
A concert tour is a series of concerts by an artist or group of artists in different cities or locations. Oftentimes concert tours are named, to differentiate different tours by the same artist and associate a specific tour with a particular album or product (for example: Michael Jackson's Bad Tour). Especially in the popular music world, such tours can become large-scale enterprises that last for several months or even years, are seen by hundreds of thousands or millions of people, and bring in millions of dollars (or the equivalent) in ticket revenues.
Different segments of longer concert tours are known as "legs". The different legs of a tour are denoted in different ways, dependant on the artist and type of tour, but the most common means of separating legs are dates (especially if there is a long break at some point), countries and/or continents, or different opening acts.
另外的参考(不单指演唱会):
roadshow - a group of people who travel around the country in order to give shows for public entertainment, or the show itself。
e。g。The roadshow is coming to town.