s ▁containing ▁selected ▁songs ▁from ▁all ▁Ay re on ▁albums , ▁and ▁a ▁DVD ▁featuring ▁live ▁performances , ▁video ▁cli ps ▁and ▁behind - the - sc enes . ▁ ▁The ▁third ▁CD ▁also ▁features ▁a ▁song , ▁called ▁" E p ilog ue : ▁The ▁Memory ▁Rem ains ", ▁specifically ▁written ▁for ▁the ▁release , ▁which ▁provides ▁further ▁insight ▁into ▁the ▁final ▁chapter ▁of ▁the ▁Ay re on ▁concept ▁and ▁the ▁probable ▁future ▁of ▁its ▁characters . ▁Jas per ▁Ste ver lin ck , ▁singer ▁of ▁Ar id , ▁made ▁a ▁guest ▁appearance ▁as ▁the ▁vocal ist ▁of ▁the ▁song . ▁He ▁would ▁later ▁be ▁invited ▁by ▁Ar jen ▁to ▁sing ▁on ▁his ▁new ▁side ▁project ▁Gu ilt ▁Machine . ▁ ▁Many ▁songs ▁were ▁rem aster ed ▁for ▁this ▁release . ▁A part ▁from ▁the ▁CD s ▁and ▁DVD , ▁a ▁tim eline ▁poster ▁illustr ating ▁the ▁Ay re on ▁universe ▁and ▁a ▁book let ▁containing ▁new ▁photos , ▁lyr ics , ▁and ▁notes ▁on ▁the ▁story ▁are ▁also ▁available ▁in ▁the ▁Tim eline ▁package . ▁ ▁Background ▁ ▁Ar jen ▁A . ▁Luc assen ▁said ▁that ▁he ▁hasn ' t ▁released ▁a ▁compilation ▁album ▁before ▁because ▁he ▁didn ' t ▁want ▁to ▁reun ite ▁random ▁chap ters ▁of ▁a ▁whole ▁history ▁in ▁a ▁single ▁album . ▁However , ▁after ▁connecting ▁all ▁other ▁Ay re on ▁releases ▁in ▁the ▁album ▁ 0 1 0 1 1 0 0 1 , ▁he ▁changed ▁his ▁mind ▁and ▁decided ▁to ▁create ▁the ▁album , ▁which