When Joshua Bell was 21, he recorded an iconic piece of chamber music for piano and violin — the Sonata in A major by Cesar Franck. Today, Bell is 44 and he's recorded it again. It's on his new album, French Impressions, with pianist Jeremy Denk.

All Things Considered host Robert Siegel invited Bell to listen to his old recording for a little session of compare-and-contrast.

"Do you hear the same violinist?" Siegel asks, after playing for Bell the opening bars of his 1989 recording.