Cuccioli, who has appeared on Broadway in Jekyll & Hyde, Les Miserables and the Off-Broadway revival of Jacques Brel, will guest at Barbour's 9:30 PM performance.

Jeremy Roberts serves as musical director for the concert, which features Barbour's renditions of "Loving You Keeps Me Alive," "If Ever I Would Leave You," "If I Loved You," "If I Can’t Love Her," "If Dreams Come True," "My Funny Valentine," "Embraceable You," "On The Street Where You Live," "Unexpected Song" and "Autumn Leaves."

This season Barbour was seen as Sydney Carton in A Tale of Two Cities. His other Broadway credits include Assassins, Urinetown, Jane Eyre, Beauty and the Beast, Carousel and Cyrano—The Musical. He has appeared in such films as "Eight Crazy Nights" and has guest-starred on such television shows as "Sex and the City" and "Ed."

The extended engagement of Love Songs plays Saturday evenings at 9:30 PM through March 28. An additional 4 PM matinee has also been added on Sunday, March 15.

Tickets are priced $25, $45, and $60; there is also a $25 food-drink minimum per person. Sardi's is located in Manhattan at 234 West 44th Street. For reservations call (212) 868-4444 or visit www.smarttix.com.