Use "signature tune" in a sentence

1. Humming the signature tune to ER, I staggering over to the kitchen sink, picked up the chicken and deftly sliced around one leg with a sharp knife

2. The signature tune for the morning talk show woke Chris at seven o’clock

3. Although the show always kicked off with Joe Loss’s signature tune, the old Glenn Miller number “In the Mood,” the rest of the repertoire was taken directly from the hit parade