A guitar technician (or 'guitar tech') is a member of a music ensemble's road crew who maintains and sets up the musical equipment for one or more guitarists during a concert tour.uitar techs learn their craft either on the job, by working in a range of music, sound engineering, and instrument repair jobs; by completing a guitar repair program at a college or lutherie school; or from a combination of these two routes.
Common causes of pain in the big toe include gout, a bunion, a claw toe, an ingrown toenail and a turf toe, according to WebMD. Osteoarthritis of the big toe is another common cause of pain in the big toe, notes Healthline. Keep Learning.
Answer. There can be several causes of painful bumps on the feet. The health care providers who will be well qualified to discuss this issue with you include your primary care doctor and your podiatrist. Among the most common cause of painful bumps on the toes are corns. Corns are highly compressed calluses that form on areas of wear on the foot. Wearing well-fitting shoes or inserts to relief compression can help.