To prove this, Spanish singer Soraya Arnelas Rubiales — better known by her stage name Soraya — put on a very special show for her youngest audience ever.
Soraya sang two Christmas carols, "All I Want for Christmas Is You" and "White Christmas", to 10 soon-to-be mums who joined her on stage to dance. But it wasn't just the mothers who heard her melodic voice. The unborn babies enjoyed the music too, as it was broadcast into the womb using a unique invention called the BabyPod.
The BabyPod is the result of a Spanish study which proves that foetuses respond to musical stimuli by moving their mouths. But how exactly does it work?
The device is inserted into the vagina and worn much like a tampon. It then connects to a smartphone to pump out music at 54 decibels for the babies to listen to.
Speaking of the concert, which was uploaded to YouTube by Instituto Marques, Soraya said, "I've never been performing for such a young audience, so it's been a very special show".
And she's not the only one who won't forget the show anytime soon.
Expectant mum Soraya Korkar was part of the special show, and she revealed that, "It was the first time I experienced something like that. It was really amazing".
"It was unique", she added.
The BabyPod is described on its website as a device used to "stimulate vocalization of babies before birth with music", and if you want one yourself, it will set you back around £91.
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