尝试:

//CD[COUNTRY/text()="EU"]/*[self::TITLE or self::YEAR or self::PRICE]

它只选择那些EU为COUNTRY的CD，然后选择所有标签名称等于TITLE的孩子 或 YEAR 或 PRICE.

It selects only those CDs that have EU as COUNTRY and then selects all children having the tag name equal to TITLE or YEAR or PRICE.