- On , ▁and ▁" S ong ▁of ▁Power " ▁by ▁Short ▁Leg ▁Summer . ▁ ▁A ▁number ▁of ▁audio ▁CD s ▁linked ▁to ▁the ▁an ime ▁series ▁have ▁been ▁released ▁in ▁Japan . ▁The ▁original ▁sound track ▁was ▁released ▁on ▁two ▁disc s ▁by ▁A vex ▁Mode ▁on ▁March ▁ 5 , ▁ 2 0 0 8 ▁under ▁the ▁title ▁E yes h ield ▁ 2 1 ▁Complete ▁Best ▁Album . ▁Three ▁compilation ▁albums , ▁E yes h ield ▁ 2 1 ▁Original ▁Sound track ▁Sound ▁Field ▁ 1 , ▁E yes h ield ▁ 2 1 ▁Sound ▁Field ▁Es pe cial , ▁and ▁E yes h ield ▁ 2 1 ▁Song ▁Best , ▁featuring ▁opening ▁and ▁ending ▁them es , ▁insert ion ▁songs , ▁and ▁character ▁and ▁team ▁songs ▁were ▁released ▁on ▁August ▁ 3 1 , ▁ 2 0 0 5 , ▁December ▁ 2 1 , ▁ 2 0 0 5 , ▁and ▁March ▁ 2 3 , ▁ 2 0 0 6 ▁respectively . ▁Six ▁max i ▁singles ▁containing ▁character ▁songs ▁have ▁also ▁been ▁published . ▁The ▁first ▁three , ▁for ▁S ena ▁Kob ay ak awa , ▁Mam ori ▁A nez aki , ▁and ▁Mont a , ▁were ▁released ▁on ▁October ▁ 2 6 , ▁ 2 0 0 5 . ▁The ▁other ▁three , ▁with ▁the ▁songs ▁of ▁Har uto ▁Sak ur aba , ▁Se ij ur ou ▁Shin , ▁and ▁Su z una ▁T aki , ▁were ▁released ▁on ▁January ▁ 2 5 , ▁