. ♪ >> in milwaukee, a musical dream come true for zach bryan super fan megan peterson.o walking off stage and giving her his guitar. >> for you. >> oh -- >> you want to come backstage? i'll give this to you back there, okay? >> thank you. >> a teen who's battling a rare and painful abdominal disease even got a vip visit backstage. for megan and her mom courtney, zach's music and kindness have been a lifeline. [ cheers ] >> so what was going through your mind and through your heart at that moment? >> we were at a point in my life where we didn't know if i'd make it another week. and i finally had a feeling of happiness and being carefree that i hadn't felt in so long because i was just so overjoyed in the moment. >> courtney, how special is it to all of you? >> well, it's just nice to know that she has a little place to escape. we have never been more supported and felt more loved in our whole lives because of people like zach who just decide to take a moment and spend it with megan and getting to know her. >> and megan tells me that zach and his family have asked her fo