Megan Fox and Machine Gun Kelly are all about the small things.

The Transformers alum gave birth to her a baby girl with the “My Ex’s Best Friend” rocker on March 27 while listening to an instrumental track composed by MGK and his musician friends, including Blink-182 drummer Travis Barker.

“We composed the score of the birth,” MGK wrote on Instagram Stories, explaining that his child was born into 432 Hz, which is believed to be a harmonious and soothing frequency. “What an epic journey. Praise God.”

On his Instagram, the 34-year-old confirmed that he and Megan welcomed a daughter. “She’s finally here!!” he captioned a black-and-white video of himself holding the baby girl’s hand. “Our little celestial seed.”

This is the second child for MGK, who is also dad to 15-year-old daughter Casie from his past relationship with Emma Cannon. 

Meanwhile, the newborn is Megan’s fourth baby, having previously welcomed kids Noah, 12, Bodhi, 11, and Journey, 8, with ex-husband Brian Austin Green.