Breaking in new speakers, what is your favorite music for this?

I use the Isotek, sound enhancer & burn in cd.   

+1 Stereo5

On top of that I also use the Ayre album Irrational but Efficacious album. The noise loops for hours even overnight at lower levels and then run the full glide tone track to tune up the system daily. 

@stereo5 ​​​​@blisshifi those are good suggestions if you have a CD player... but what if you only stream?   Classical music, rock, or does it not really matter?  I'm having the crossovers and drivers on vintage refurbished on vintage Altec Lansing Model 19's, but really want to avoid having to jack up the volume to break them in.  

I've always done it the old fast way....just listening. I enjoy listening to the change in a new component.  

If you want a good recommendation for a reference, Ray Brown "Soular Energy" is a goodun.

@pdreher I have them as digital files looping through my Aurender, but not sure they’re available on streaming. There are a few other noise loop albums on Tidal and Qobuz though. 

Bach Toccata en fugue on a loop

Rock is the one I will use, if you don’t have burn in cd like xlo burn in cd.

Nino Rota