. ♪ don't go chasing waterfa waterfalls ♪ >> reporter: in april of 2002 kaia lopreste died in a car crasht random thing. it really can and it just is like, wow, you know? i will say every time and i mean every single solitary time that i watch sleigh ride video, the christmas one and at the very end, when we say, ha ha ha, and the three of us are hurting and it is like a still shot. and i don't know what that is. but every time i see it, and just like, yeah. i don't know. i get choked up. ♪ ♪ >> reporter: but chilli and t-boz have persevered, given their biggest performance ever at the festival last year. the milestone captured by the documentary. >> i was so nervous. i mean, we get nervous anyway before shows. but yes. still. a still to this day. it is like the nerves are there. i was, oh, my gosh, i was like, but i was so excited. >> reporter: what do do see for tlc moving forward? >> so we are currently working on our musical. that is in the works. and we have even talked about, you know, creating some new music for it. just, you know, just however it comes together. but it. but it is