Conversation so far:
On what movie didDimitri Tiomkin work with Frank Capra?
Dimitri Tiomkin received his first break from Columbia director Frank Capra, who picked him to write and perform the score for Lost Horizon.
Did Dimitri Tiomkin work on Capra films after Lost Horizon?
Dimitri Tiomkin worked on other Capra films, including the comedy You Can't Take It With You, Mr. Smith Goes to Washington, Meet John Doe, and It's a Wonderful Life.
Did Dimitri Tiomkin write the scores for the movies he did with Capra?
Yes.

Question: Was It's a Wonderful Life the last movie he did with Capra?
Self-contained rewrite: Was It's a Wonderful Life the last movie Dimitri Tiomkin did with Capra?