Kastro aKa SLiM PiCKENS, Kyvah Johnston, was Born in the Roxbury section of Boston. The first born of two boys he was destined to entertain. Early on a young Kastro demonstrated his love for entertainment by performing for family members growing up in a home filled with music fueled Kastro's Passion. At the Age of 12 he began writing, Free styling, and developing his craft.

Kastro's Style is based on hip hop roots, socially conscious what is consider underground. He has had air play on several college radio stations and has featured on some local mainstream stations as well. Aside from radio he has also received recognition from the internet as an electrifying MC on the rise. Kastro has been a featured artist on sites such as Disdain.tv, Rapstation.com, LOUD.com, OURSTAGE.com, Big-Mike.net, Download.com to name a few.

Kastro has become a well respected performer around the Boston area performing at venues like Harper's Ferry, The Western Front, Kay's Oasis, Mc Gann's, The Middle East, Ecko Lounge. He has even shared the stage at famed Lollapalooza with Jurassic 5, 2004 @ The Tweeter Center in Mansfield. Kastro's dedication is shown through his drive and hustle. He hit the streets and clubs daily pushing his independently released Demo album, which he released in mid November 2002. And has released over 20+ mixtapes in the Boston and surrounding areas over the past 4 years. Thanks to the support of Fans, barbershops, and mom and pop stores through out the New England area.

Kastro's Future Aspirations are to help in the development of Roxbury through the education of children and adults alike. Kyvah is a man who stands for the people and works to teach them knowledge to build themselves and the community. He has been inspired to give them tools rather than hope to succeed.