John Evan did tremendous piano playing, as well as other keyboard instruments; organ, accordion, electronics...

After his departure from the group, there have been several others who did piano, but electronics seemed to increase in use over the years.

Ian Anderson (Mr. Jethro Tull) has released a few solo albums in the past few years, some of which did use piano. He also released an orchestral collection titled "Divinities; Twelve Dances with God", which is a excellent work.

Anderson also plays piano as well as a myriad of other instruments.

I really haven't checked their site lately, I do not know what is doing now.

ken