Songs for Speaker Placement

BTW... start with room treatments. 

I managed to place them at a good spot... it's been a year and finally found the right spot where all music plays well.

Finally got the bass managed well... moving out from the front walls tame the boominess, reducing speaker distance apart increases mid bass.

Thanks all for the hints. 

This is a helpful diagnostic tool:  https://www.audiocheck.net/audiotests_ledr.php  The LEDR test is also available on some system set-up CDs, but-  the phase anomalies, present in some CDPs, can affect the results, as explained in this Stereophile article:     https://www.stereophile.com/features/772/index.html

@audionoobie, At least this is what I experience too. I am also experimenting a lot here... 

PS Audio founder Paul McGowan explains midbass in his youtube video titled "Optimal distance Between loudspeakers". I also find different listening distance from speakers affects bass as well. Bass null zones as they call it. You can hear more about it in a Youtube video by Dynaudio titled "A Master class in speaker placement" 1:56 distance to the wall.

Hope this helps.