▁to ▁Cob ain ' s ▁depth ▁of ▁feeling , ▁" sin cer ity " ▁as ▁a ▁vocal ist , ▁and ▁distinction ▁from ▁other ▁sensitive ▁alternative ▁rock ▁types ▁such ▁as ▁Edd ie ▁V ed der ▁and ▁Lou ▁Bar low : ▁" The ▁vocal ▁performance ▁he ▁ev okes ▁is ▁John ▁L enn on ' s ▁on ▁John ▁L enn on / Pl astic ▁O no ▁Band . ▁And ▁he ▁did ▁it ▁in ▁one ▁take ." ▁ ▁Ret ros pective ▁In ▁a ▁ret ros pective ▁review ▁for ▁All Music , ▁senior ▁editor ▁Stephen ▁Thomas ▁Er le w ine ▁said ▁MTV ▁Un pl ug ged ▁in ▁New ▁York ▁was ▁" f ear lessly ▁conf essional ", ▁as ▁it ▁found ▁N ir v ana ▁and ▁Cob ain ▁" on ▁the ▁ver ge ▁of ▁discover ing ▁a ▁new ▁sound ▁and ▁style ". ▁Jason ▁M end el so hn ▁from ▁Pop Mat ters ▁believed ▁its ▁int imate ▁folk ▁rock ▁quality ▁was ▁radical ▁from ▁N ir v ana ▁and ▁Cob ain , ▁" as ▁cr ass ▁of ▁a ▁business ▁move ▁as ▁it ▁was " ▁by ▁their ▁record ▁label . ▁In ▁The ▁Rol ling ▁Stone ▁Album ▁Guide ▁( 2 0 0 4 ), ▁journalist ▁Charles ▁M . ▁Young ▁called ▁it ▁N ir v ana ' s ▁" second ▁master pie ce " ▁after ▁Never mind , ▁and ▁claimed ▁that ▁Cob ain ▁could ▁have ▁" re volution ized ▁folk ▁music ▁the ▁same ▁way ▁he ▁had ▁rock " ▁because ▁of ▁his ▁striking ▁voice ; ▁he ▁said ▁his ▁songs ▁worked ▁equally ▁well ▁with ▁" a