Its a classic example of showing power and nothing much more than that.
No.
This is a classic way of cleansing from bad things, of replacing them with the good, the hope for the future, the light, peace.
You remove the land mines as the first step, so that people would not die from explosions. Then you remove the mines in people's heads, and the best way of doing so is with classical music. It's sad that this simple thing even needs to be explained.
The concert is to commemorate the dead (on the same day, officer Alexander Prokhorenko was buried in Russia - he called airstrike fire at his own position, when he was surrounded by terrorists), and the concert is to remind the world that Palmyra is an ancient city, which endured time, and which will stay on, but only as long as humanity manages to get off the path of self-destruction.
Until the Western civilisation understands that simple thing, it will continue stepping on the same rake, driving into chaos time and again.
https://www.youtube.com/watch?v=9b0hFIf4Zaw
PS: Speaking of the sick minds putting a twist on the memorial concert: http://www.fort-russ.com/2016/05/us-foreign-policy-calls-palmyra-concert.html
You do not clean a place up by closing roads with military forces and bringing in media and mostly Russians for a event. Hey you are liberated now get out of the way so we can put on a concert!
Russia does positive things but they tend to have a need to slap themselves on the back after.
You presume the West does not follow history and who is to say if they are achieving their goal by disrupting the area. Syria is a Russian ally not the Wests, so that might explain why you disagree.