Odorokasu koe nakariseba hototogisu mada utsutsu ni wa kikazu zo aramashi - Kinyo Wakashu(English Translation & Meaning)

驚かす声なかりせばほととぎす
まだうつつには聞かずぞあらまし

Roma-ji: Odorokasu koe nakariseba hototogisu mada utsutsu ni wa kikazu zo aramashi
English Translation: Had there been no voice
to rouse me from my slumber,
the little cuckoo
not yet in waking life
would I have heard sing
Meaning: Had no voice woken me from sleep, I would not yet have heard the cuckoo in waking life, but only in my dreams.
Commentary: Book Two Summer Poems 115

Had there been no voice to wake him, the poet would not yet have heard the cuckoo in waking life rather than in dreams. The joy of hearing the bird thanks to being roused is expressed as a contrary-to-fact supposition.
From poem 104 through poem 126 in this book, poems on the cuckoo follow one another, expressing every mood around the bird: waiting for its first song, seeking it out, rejoicing at hearing it and lamenting having missed it.

First line, 'odorokasu', means to rouse from sleep, referring to the voice that woke the poet.
Second line, 'koe nakariseba', uses seba, the irrealis of the past ki with ba, forming a contrary-to-fact condition answered by mashi in the final line. It shares the seba ... mashi construction with the preceding poem, 114, and the two form a pair.
Third line, 'hototogisu', is the bird to be heard.
Fourth line, 'mada utsutsu ni wa', uses utsutsu, waking reality as opposed to dreams, implying that he may have heard it in a dream.
Final line, 'kikazu zo aramashi', is a binding in which zo closes on the attributive mashi, meaning I would not have heard it.
Source: Kinyo Wakashu
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