Acoustic guitar, great guest singers, what else could a music lover ask for. The songs I heard on their last tour, which were original new songs, were absolutely wonderful. I was impatiently looking forward to the release of the new album. If the songs were too gloomy, so what. Music is an amplifier of one's own feelings.
People go through different stages in life.
If it just so happens that your a famous member part of a famous band, the rules don't change. They have the money and brain power to release it themselves if they felt inclined to. The Dave Matthews Band has the magical ability to make a 12 minute song seem like two minutes. God Bless you all.