I was at the DC show and it was amazing how hard Bowie worked; he had just traveled from Ontario to DC and was due in Pittsburgh the next night, nonetheless, he delivered song after song as if it was a one off concert.
Some things that struck me:
How great Bowie's voice sounded. He's simply one of the great singers of all time.
The lush background harmonies of Gail and Kat. They might be Bowie's best background singers of all time.
Earl Slick's beautiful guitar work. He had great tone all night and played an especially sensational solo during the extended outro of Sunday.
Each song was arranged wonderfully and I could hear new power in a lot of them that I never experienced before.
I was surprised at how drab the stage looked and how plain Bowie was dressed, in a pair of jeans and a black t-shirt that looked like he was wearing all day.
But this show was based on the music and Bowie did not need a single prop to convey his songcraft and his great band.