For Ó Murchú, this is a positive innovation. "I love jazz and jazz musicians improvise in exactly the same way that traditional musicians do, with the grace notes.[quote]
he clearly does not know what he is talking about.
in Jazz thereare two forms of improvisation chordal and melodic,neither bears much resemblance to ornamentation used in irish trad.
perhaps very early trad jazz,used a similiar melodic variation,but even from 1920 onwards the improvisation was much more complex than irish traditional ornamentation.