This is the 3517th most frequent Japanese word.
聴い
"聴い" is the stem form of "聴く," meaning "to listen" or "to hear attentively."
In this sentence, "聴いていました" is used in the past progressive tense, describing the action of actively listening to music at a previous time.
私は新しい曲を聴いていました。
I was listening to a new song.
Here, "聴いてください" is the imperative form, urging the listener to actively pay attention to and comprehend the spoken content.
彼の話をしっかり聴いてください。
Please listen carefully to his speech.
In this sentence, "聴いてみましょう" is a suggestive form, promoting the action of attempting to listen to the bird's sound attentively.