さやくように恋を唄う

Question 1

演奏
演:　performance, act, play, render, stage
奏:　play music, speak to a ruler, complete

Answer 1

Musical performance

Question 2

一目

Answer 2

ひとめ（glance; look; glimpse）mirada; mirar; vistazo

Question 3

舞う

Answer 3

まう（）to dance (orig. a whirling dance)​　bailar (orig. una danza giratoria)​

Question 4

一目惚れ

Answer 4

ひとめぼれ（Love at first sight​）