Acumen Acumen is a crossbread between Progressive Rock, Art Rock, and Jam Rock, bringing into one cohesive mix, influences of Jethro Tull, Kansas, Yes, The Band, Bob Dylan, and the Beatles, along with folk music from aroung the world. Criticaly acclaimed world wide the band has 3 albums available; Think, Out Of Balance, & Diversity, and is currently working on their forth CD.