Marshall Trio's debut album "Toby Arrives" was submitted for a Grammy nomination 2018. Solo work Koch works as a clinician for Fishman and Martin. In addition, Koch has his own signature amplifier ‘The Greg’, manufactured by the Koch Amplifier company. Koch also has a signature guitar which was released in 2019 by Reverend Guitars, named the ‘Greg Koch Signature Gristlemaster’. The guitar colors were given somewhat humorous names like: Kochwork Orange, and Blucifer. Since 2011, Koch has made monthly promotional videos for Wildwood Guitars in Colorado. He has made approximately 4000 videos which have over 50 million views. Koch released an acoustic album in December 2019. The 38-minute album has 14 songs. In 2019 Koch signed with True Grit Talent Agency. Style Koch has developed his own style of chicken picking on the guitar and has taught his method, referred to as hybrid picking. Koch uses a guitar pick held with the index finger and thumb of his right hand to pick the bass notes; he uses his other three fingers to pick the treble strings. Koch has termed his style of playing "gristle" and has been called the "Gristle King". Gristle is usually instrumental, guitar-driven music that leads to a crescendo of trading solos. Koch's ability on the guitar has been admired by other guitarists. When guitar pioneer Les Paul had his 100th birthday celebration Koch was invited to play. Joe Bonamassa and Steve Vai praised his mastery over guitar and versatility in style. Musical equipment Guitars 1953 Fender Telecaster Wildwood Spec #10 Fender Telecaster with Fishman Fluence pickups Fender Stratocaster Fender Custom Shop Greg Koch GSK Stratocaster Reverend Guitars Greg Koch Signature Gristlemaster Accessories Fishman Fluence Signature Series Greg Koch Gristle-Tone™ Pickups T Jauernig Electronics, Greg Koch The Gristle King V3 effect pedal Amplifiers Koch Amplifier signature amp "The Greg" Books authored by Koch Hal Leonard Guitar Method Book 1: Book/CD Pack By will Schmid and Greg Koch January 1995 Hal Leonard Guitar Method - Blues Guitar by Greg Koch January 2002 Hal Leonard Guitar Method, Complete Edition: Books 1, 2 and 3 By Will Schmid and Greg Koch May 2002 Rhythm Riffs: Over 200 Riffs in All Styles Hal Leonard Guitar Method (Hal Leonard Guitar Method (Songbooks)) by Greg Koch May 2003 Lead Licks: Over 200 Licks in All Styles Hal Leonard Guitar Method (Hal Leonard Guitar Method (Songbooks)) by Greg Koch January 2003 Hal Leonard Country