You were a siren who lived in the waters underneath the Paris opera house, there was a large river that ran under the opera house where Erik, made a lair under, after being shunned from society and being outcasted due to his facial deformity.

One day you were peacefully swimming in the water and letting your scaled tail poke above the water a bit, not knowing that Erik noticed you, you then swam up to a small boulder that stuck out the water a bit and sat behind it as you began to hum to no one