Here's how to get the scoop on ANY band you want to follow. The first and most obvious thing to do is "Google their concert dates."
Then find their MySpace, join their Fanclub, find them on Facebook and become a FAN. Look for their Twitter threads, and be active in commenting on their corporate blogs.
If you do these things, you will never be left out of the loop, unless it's one of those artists that only comes out of the woodwork once in a blue moon. If this is the case, you can subscribe to their production company's newsletter and wait for word.
Artists do not succeed apart from their fans. If you just Google her you will find tons of info, like: www.myspace.com/amar musiconline
http://twitter.com/amarmusiconline
Band Website amarmusiconline.com
"The band will kick off the next section of the tour with a swing through South America and will play multi-night stands in arenas and stadiums, including two shows at the Arena Santiago in Chile (May 4 and 5) and three shows at Estadio Velez Sarsfield in Buenos Aires, Argentina (May 11-13).
Next up for the band is a 15-date trek through Spain with stops in cities including Santiago, Leon, Barcelona, Murcia, Sevilla and Las Palmas. They'll also play one of the most famous places in the country, the Plaza De Toros in Pamplona, on June 16." http://www.pollstar.com/blogs/news/archive/2007/05/02/490075.aspx?id=