this is so incredible to own something so intimate. >> iconic, it speaks to amy winehouse, that is amyse her dad said she didn't have to. >> no, no. kennedy: interesting, i was on mtv was nirvana. >> i know you were, i talked about you, we sold his guitar from the smells like teen spirit video at hard rock, 4.5 million. kennedy: wow. >> he is collectible and we sold his guitar mtv unplugged. >> we cold kurt's guitar ar 6 million for 10,000 in 2020. this is incredible. kennedy: the tender mustang, this was -- if you are a real nirvana fan, you love them during bleach, this was first time that band went on tour, and kurt smashed that, and then he really developed a love for smashing guitars. >> absolute, 1989, bleach just dropped, thin to little back you know small houses in the u.s., including chicago, this one was in pennsylvania. 1989, june. and smashed it, he loved it, this is a 1973 fender mustang. after that, he learned to use a less expensive ge guitar, he loved it then one night he was performing and he didn't have a guitar, he smashed his guitar, and he borrowed a guitar he gave