The tracks that comprise this incredible aural experience are far too integrated for anyone to choose a "favorite", let alone a "representative" track. Since "Omar Sextet" is best heard in its entirety, i recommend you listen to the whole album, and then buy it...
This album -- along with Al Doum & The Faryds' "Spirit Rejoin" (also available on Bandcamp) -- is the release of the year (2018)... The Execrable Bede