improvise.01
frames-  *-1 Keeping the mood light , [ARG0  the two]  [ARGM-TMP  then]  chanted and chortled their way through some murderous polyrhythms , devised * by Mr. Douglas as an alternative to Hindemith 's dry theory-teaching techniques , and then , [ARGM-ADV  with Mr. Gomez]  , soared and [rel  improvised]  on [ARG1-on  the composer 's tight `` Bebop Etudes]  . ''