Subwoofer with music: Yes or No?

[JoeE SP9]

My answer is yes. I use two TL subs for two channel playback.

[Sir Terrence the Terrible]

Unless you have a VERY big speaker for two channel(the larger Wilsons, Revel Salon's, and other speakers capable of extended range output) then a subwoofer is a must.

They have so many integration tools these days, the excuse of integration issues is basically moot.