These are primal forms of play, if you like, ; that suggest forms of poetic activity; also, spiritual activity.

这是玩最原始的形式，如果你愿意，这种形式显示出了诗歌活动的形式;,还有精神活动。

耶鲁公开课 - 现代诗歌课程节选

It's got to have activity to play itself out as melody.

把它表现成旋律也必定要很活跃

耶鲁公开课 - 聆听音乐课程节选