Guitar Center is the world''s largest retailer of guitars, amplifiers, drums, keyboards, recording, live sound, DJ, and lighting equipment, with more than 290 stores across the United States.u202f 2014 marked the milestone 50th anniversary of the Guitar Center Company as the organization continues to help people make music from coast to coast.u202f u202f. The Music & Arts Regional Human Resources Manager works closely and consultatively with Human Resources and Store Operations leaders in the following areas: (a) labor relations (b) employee relations; (c) employee development; (d) statutory and policy compliance; (e) investigations and related activities.