This is the lyrics for 大长今 soundtrack 呼唤, the one which is often played when 长今 was sad.

伊人欲来何时归来
伊人欲去何时离去
我欲乘风飞翔却遍寻不着伊人踪影
伊人何在留我独自失落
唉哟这该如何是好
伊人你若不归请带我一起离去
唉哟这该如何是好
伊人你若不归请带我一起离去