Rubuta ci gaba ga wannan sakin layi - Lokacin da Warsaw Pact ya mamaye
Czechoslovakia a ranar 20 ga Agusta 1968, karatun Hammer a Kwalejin ya yanke. Hammer ya yi rikodin kundin raye-raye na jazz a "The Domicile" a Munich a ranar 30 ga Agusta, 1968. An saki wannan a matsayin Maliny Maliny ta hanyar lakabin Jamus MPS Records. Hammer ya yanke shawarar komawa Amurka kuma ya yanke shawarar zama ɗan ƙasa bayan ya sami tallafin karatu a Makarantar Kiɗa ta Berklee a Boston.