Playing music to your baby in the womb: a gentle guide for the second and third trimester

When can babies hear music in the womb?

Hearing develops gradually during pregnancy, and many parents begin a gentle music routine sometime in the second trimester or early third trimester. The goal is not to teach your baby a skill or promise better sleep. It is simply to create a familiar sound pattern that you enjoy too.

Research suggests that babies can notice repeated sound patterns before birth and may remember some of them after birth. That is why a lullaby can feel like such a lovely ritual: the same small melody, heard again and again, becomes part of the background of your pregnancy.

What the research suggests

The best-known example is Partanen et al. (2013). In that study, families played “Twinkle Twinkle Little Star” about five times per week during late pregnancy. After birth, the babies who had heard the melody showed stronger brain responses to it, and the response was still seen up to four months later. That does not mean one song changes a baby forever; it suggests that repeated melodies can become familiar.

Other studies point in the same gentle direction. Lang et al. (2020) looked at nursery-rhyme familiarization and found signs that familiar rhymes after birth may be connected with quieter states, including more deep or quiet sleep and lower heart rates. Arya et al. (2012) studied maternal music exposure during pregnancy and reported improved newborn self-regulation on parts of the Brazelton scale. Mastnak (2016) discusses prenatal music in the wider context of hearing, learning, and bonding.

Read together, the studies are reassuring rather than prescriptive. They do not say that you need a special device, a perfect playlist, or a complicated schedule. They support a softer idea: familiar, repeated sound can matter, and music can be a comforting way for you and your baby to share a tiny routine.

How often should you play a lullaby?

A useful rhythm is three to five times per week, for a few quiet minutes at a time. Partanen’s “Twinkle Twinkle” study used about five plays per week, which makes it a helpful real-life reference point. If daily listening feels soothing, that can be lovely. If twice a week is all you can manage, that still counts as a caring ritual.

Choose one short song and repeat it for a while before changing everything. Repetition is the point. Your voice counts too: humming, singing, or reading a rhyme in your normal voice may be even more personal than pressing play.

What kind of music should you choose?

Start with music that helps you feel settled. A slow lullaby, a nursery rhyme, a soft piano piece, or your own gentle singing can all fit. The song does not have to be classical, expensive, or specially engineered for pregnancy. It simply needs to be something you can return to without feeling irritated by it.

If you hope to use the melody after birth, pick something short enough to repeat during a cuddle or bedtime routine. Familiarity works best when the song is easy to recognize, easy to play again, and emotionally comfortable for you.

What volume is safe?

Keep it at soft room volume: comfortable for you, calm enough that you could talk over it, and never blasted through headphones against your belly. If it feels loud, buzzy, or stressful to you, turn it down or stop. Prenatal music should feel like a settling cue, not stimulation you have to endure.

A simple setup works well: sit or lie somewhere comfortable, play the melody from a nearby speaker, take a few slow breaths, and let the song be part of a winding-down moment. You do not need to monitor movements, force a response, or worry if your baby seems quiet. Always follow your clinician’s guidance if you have questions about your pregnancy.

A tiny routine you can try tonight

1. Pick one lullaby or nursery rhyme you would not mind hearing after birth.
2. Play or sing it at soft room volume, ideally when you are already slowing down.
3. Repeat it a few times per week, without tracking or pressure.
4. After birth, try the same melody during a calm cuddle, feed, or bedtime routine.

The beauty is that the routine belongs to you. Some nights it may feel tender and connected. Other nights you may forget completely. Both are normal. The aim is familiarity, not perfection.