Contours Blue Note SeriesOn Contours, his second Blue Note album, tenor saxophonist Sam Rivers fully embraced the avant garde, but presented his music in a way that wouldn't be upsetting or confusing to hard bop loyalists. Rivers leads a quintet featuring trumpeter Freddie Hubbard, pianist Herbie Hancock, bassist Ron Carter, and drummer Joe Chambers through a set of originals that walk a fine line between probing, contemplative post bop and densely dissonant avant jazz. Each