Labeled as a jazz rock band, Steely Dan were able to crossover to mass appeal due to their brilliantly constructed compositions and sophisticated harmonies. The vision for this album was clear: incorporate several leading session musicians that would best suit the style of each song. Known for their unique mixture of jazz pop rock, band leaders Fagen and Becker were true New Yorkers but relocated to the west coast for this recording. Many of the session players utilized were from California and this infused a certain California sound on many of the songs. Thus, for the first time, Aja represented a sonic fusion of east meets west (“Home at Last”) for Steely Dan.