"The Mary Tyler Moore Show" theme song has never sounded as adorable as it did when Mary Tyler Moore, Valerie Harper, Cloris Leachman, Georgia Engel, Jane Leeves, Wendie Malick, Valerie Bertinelli and Betty White sang it with Katie Couric.
The "Katie" interview ended with an off-key -- yet still wonderful -- rendition of the famous sitcom theme song.
For more adorableness, tune in for "Hot In Cleveland's" "Mary Tyler Moore Show" reunion episode, which is set to air in September.
"Katie" airs weekdays, 3 p.m. ET on ABC.
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