sunday january 2nd. here's a preview. >> friends, collaborators, legends, their music shaped a generation, they came together for the tour of a lifetime. ♪ ♪ and it's too late baby, now it's too late ♪ >> james taylor. >> his songs were amazing, his voice is amazing and his demeanor. >> hee-haw. >> and carole king. one of the greatest songwriters of all time. i asked her to be a part of my mind. ♪ i've seen fire ♪ >> 40 years have passed since the first time we played. >> i love every experience we have had together. ♪ you just call out my name and you know wherever i am ♪ ♪ i'll come running ♪ "just call out my name" next sunday at 9:00 on cnn.