▁po ems ▁were ▁published ▁in ▁New ▁World s ▁and ▁other ▁mag az ines . ▁Although ▁he ▁was ▁influenced ▁by ▁the ▁New ▁W ave , ▁Cal vert ▁developed ▁a ▁distinct ▁style ▁of ▁his ▁own . ▁His ▁ability ▁to ▁change ▁flu ently ▁between ▁poetry , ▁music ▁and ▁theatre ▁allowed ▁him ▁to ▁develop ▁into ▁a ▁multimedia ▁artist . ▁Cal vert ▁then ▁became ▁acquaint ed ▁with ▁Dave ▁Bro ck , ▁and ▁became ▁the ▁resident ▁poet , ▁ly ric ist ▁and ▁front man ▁of ▁Haw kw ind , ▁inter mitt ently ▁from ▁ 1 9 7 2 – 1 9 7 9 . ▁Cal vert ▁co - w rote ▁Haw kw ind ' s ▁hit ▁single ▁" Sil ver ▁Machine ", ▁which ▁reached ▁No . ▁ 3 ▁in ▁the ▁UK ▁singles ▁chart . ▁Although ▁Lem my ▁s ings ▁on ▁the ▁single ▁version , ▁this ▁is ▁an ▁over d ub ▁of ▁a ▁live ▁recording ▁taken ▁at ▁the ▁Round house ▁in ▁London , ▁with ▁Cal vert ▁on ▁vocals . ▁" They ▁tried ▁everyone ▁else ▁singing ▁it ▁except ▁me ", ▁Lem my ▁later ▁said . ▁Cal vert ▁also ▁directed ▁Haw kw ind ' s ▁live ▁op us , ▁the ▁Space ▁R it ual ▁Tour . ▁ ▁Cal vert ▁suffered ▁from ▁b ip olar ▁dis order , ▁which ▁often ▁caused ▁a ▁f ract ious ▁relationship ▁with ▁his ▁fellow ▁mus icians . ▁At ▁one ▁point ▁he ▁was ▁section ed ▁under ▁the ▁M ental ▁Health ▁Act . ▁Despite ▁his ▁sometimes ▁deb il it ating ▁mental ▁health , ▁Cal vert ▁remained ▁a ▁fier c ely