A double for Kirsty MacColl - the US version of Tropical Brainstorm, released the year of her death, ended with "Good For Me", one of her best songs, and her last single was "In These Shoes?", probably her best-known song among the general public.
Also for ABBA - their last new single was "Under Attack", which is among my favorites of theirs. And The Visitors closes with "Like an Angel Passing Through My Room", which is a pretty perfect career closer.
Aaliyah's last single released before her death was "We Need A Resolution", perhaps her best song. (She had a lot of posthumous singles though.)
Pulp's last album ended with "Sunrise", one of my favorites of theirs.
All the tracks on Life Without Buildings' one album are basically equally good in my book, so the last one ("Sorrow") would work for me.