Best songs to test speakers

Not one of my favorite types of music but Jethro Tull 'Thick As a 'Brick'. If you can find a decent/quality recording.

i concur. i don't love the record, but it definitely is a good system checker. 

recorded very well, and great dynamics. 

Thanks for posting the links but I concur with @br3098. 

I saw Ian Anderson' ,Jetho Trull in concert in 1973 and performing Thick as  Brick! 
If you can find it, the jazz CD The Wonderful World of Three Blind Mice. Very well produced and will give any speaker system a good workout

jrwaudio65
I did too.  Phoenix, maybe 5 weeks after its release.  

+1 jrpnde and dmoss74

”Thick as a Brick” is very well recorded and has gobs of dynamic range.  It is the only LP with such dynamic range that has actually startled me upon first listen, much more so than hearing Mickey Hart’s “The Beast” accidentally fall over on Reference Recording’s “Dafos”.  The MFSL half-speed remastered release of “TaaB” from the late 1980s really shines; that could well be why used copies don’t seem to appear too frequently.  I can’t imagine how good an original first pressing or “hot stamper” could well sound.

Enjoy the music!