 Music critics and jazz historians say some of his best work was recorded during this period and it is also some of his most accessible music.Sun Ra's music in this era was often tightly arranged and sometimes reminiscent of Duke Ellington's, Count Basie's, or other important swing music ensembles.However, there was a strong influence from post-swing styles like bebop, hard bop, and modal jazz, and touches of the exotic and hints of the experimentalism that dominated his later music.