. >>> it's a big deal for my friend casey nystadt. special guest. >> errol has life-threatening brain tumor but today is not about that. today is his make-a-wish day and his make-a-wish wish was to hang out with me. >> errol chose to spend a day with casey nystadt. he loves his videos. >> my cancer is brain cancer, it's lethal in a lot of people. i've had some great doctors that have been creative with my treatment. that's major success. >> and the success of the treatment, too? >> errol is on the mend. he used to make youtube videos but got out of it. >> i deleted most of those. >> casey presents him with some gifts. bag of gifts of brand new camera equipment, no more excuses anymore, errol. the world wants to hear your story. >> i have a piano surprise for you. ♪ >> do ten-negren plays his piano around the world. remember we've had his videos on the show before. >> yes. >> more than 20 different countries, 300 cities and look, errol can play. ♪ >> this kid is just cool. >> yeah, he is and what makes this special day even more specia