Russians display outstanding musicianship

I've become a huge fan of the Russian cover band Leonid and Friends. I don't mean to ruffle any feathers but I was never much of a Chicago fan. . . until I started listening to this ensemble's killer note-for-note versions, that is. They cover a few other artists as well... Ides of March, Chaka Khan, Earth, Wind and Fire, Steely Dan, for example. The level of musicianship is world-class, both in terms of technique and in terms of bringing each song to life. 

 https://www.youtube.com/watch?v=9_torOTK5qc

https://www.youtube.com/watch?v=YHRt_EtbzdY

https://www.youtube.com/watch?v=fX8g_JEJol8

https://www.youtube.com/watch?v=aLAUyc64thU