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Marginalien zum Jazzrock
The analysis of the sound structure of a prototypical jazzrock composition, "Spinning Wheel", by the group Blood, Sweat & Tears, shows which parameters belong to the jazz idiom and which to rock. The personnel, the arranging technique, the amount and form of improvisation, the phrasing, and some harmonic aspects (alterations) are from modern jazz, as it has developed since the cool jazz period, and does not take into account any of the avant garde playing tendencies of 1968. The rhythm and use of the bass, as well as of the piano as part of the rhythm section, is more closely associated with rock music. The form of the composition, the vocal style and chord progression are borrowed from American popular music, and have found their expression in popular songs and in the all time favorites of musicals, since the beginning of the twentieth century.