Though nearly six years have gone by since Leonard Cohen’s passing, the long shadow cast by his legacy as one of the 20th century’s most esteemed and idiosyncratic singer-songwriters shows no signs of lifting from the public’s imagination anytime soon. From the enveloping warmth of “Suzanne,” to the high drama of “Hallelujah,” to the chilling minimalist and gospel juxtaposition of his swansong “You Want it Darker,” Cohen managed to constantly reinvent himself, leaving behind the rare achievement of a musical body of work whose most impressive moments exist across eras.