Concert coverage often includes a phrase saying a particular band is "on tour to support its new album."
In an age when many listeners prefer buying songs piecemeal on iTunes, album sales aren't what they used to be.1
However, concerts revenue is immune from digital file sharing. While listening to a downloaded MP3 is pretty darn similar to listening to a full-price CD, there's no shortcut to an in-person concert experience.
Thus, bands shouldn't be on tour to support their new albums. Bands ought to release CDs to support their tours.
Instead of traveling around the country to drum up business for a new CD, bands should put out new CDs in order to rally support for its upcoming concert tour.
1It's more complicated than that. Sales for the top artists are doing just fine, thank you. But I'm simplifying things here. Don't make me get bogged down with details.