That is an interesting observation Albert, I thought "Mule Variations" was a bit of a return to old form and I like it much better than some of his 1990's stuff like "Bone Machine" that I find to be more irritating than enjoyable.
I also recommend "Rain Dogs," not quite as accessible as his earlier works but rewards repeated listenings and has some great tunes.
BTW, if you are a Tom Waits fan then check out his friend Chuck E. Weiss' "Extremely Cool." I think this is the Chuck E. from Rickie Lee Jone's "Chuck E.'s in Love" but I could be wrong about that. Other fine efforts are Tom Waits cover albums by John Hammond "Wicked Grin" and Holly Cole "Temptation."
I also recommend "Rain Dogs," not quite as accessible as his earlier works but rewards repeated listenings and has some great tunes.
BTW, if you are a Tom Waits fan then check out his friend Chuck E. Weiss' "Extremely Cool." I think this is the Chuck E. from Rickie Lee Jone's "Chuck E.'s in Love" but I could be wrong about that. Other fine efforts are Tom Waits cover albums by John Hammond "Wicked Grin" and Holly Cole "Temptation."