Mom's Heart/ It Lives) - A made up word by Edmund McMillen meaning 'Killing of the heart'. Viscera ( The Womb) - Viscera is the internal organs in the main cavity of the body.Mom) - Matricide means the murder of one's own mother. Sodden Hollow ( Caves) - Sodden means 'saturated with liquid', similar to what caves are sometimes like.Diptera Sonata ( Basement) - Diptera is the order for the family of flies, which the caverns is full of, and sonata is a type of song, therefore the track literally meaning 'Fly Song'.Genesis 22:10 (Title) - A passage in the Bible which portrays the story of Isaac, describing how Abraham wielded a knife to slaughter his own son, similar to what Isaac's Mom tried to do.

Many titles of music tracks have meanings that hint to the story of the game, as well as some tracks describing the area the track plays in: Genesis Retake Dark (Updated Title Theme - Tainted Character Selection).Echoes Reverse (Dark Home & Death Certificate room).Chased by Death ( Mother's Shadow chase).Genesis Retake Light (Updated Title Theme).Chorus Mortis 'Chorus of the Dead' (Vs.Pulso Profundum 'Deep Pulse' ( Dank Depths).Kave Diluvii 'Cave Flood' ( Flooded Caves).Fundamentum 'Foundation' ( Burning Basement).Cerebrum Dispersio 'Brain Dispersion' (Boss Fight - Alternate).Ambush (Mini-Boss and Challenge Room Battle).Anima Vendit 'Life Merchant' ( Devil Room).Songs with 'quotation marks' next to their name are not part of the track title, but are approximate translations from Latin to English. What instruments gained are indicated in bold next to the tracks. The variant can be heard in the soundtrack version in the second loop of the song. Nearly every main floor track gains instruments when enough smaller enemies or bosses are in the room. All four soundtracks are purchasable individually from Ridiculon's Bandcamp page. The Rebirth, Afterbirth, Afterbirth † and Repentance soundtracks can be purchased collectively through Steam. Afterbirth+ also has the Ante Lucem bonus track that cannot be heard in-game, so with a gain of 3 tracks there is a total of 42 tracks in Afterbirth+ that can be heard in-game. Afterbirth replaces Genesis with its own rendition titled Regenesis, resulting in a net gain of 8 tracks for a total of 39 tracks in Afterbirth. That being said, the Rebirth album doesn’t include the tracks for the intro and epilogue, adding back up to 31 in-game tracks.

However, Jesus Loves Uke, He’s the Number One, and Descensum are exclusive to the Rebirth album and thus not heard in-game, though Jesus Loves Uke can be seen unused in the resources. The full albums for each consist of 32, 9, 4 and 31 tracks, respectively. The music in The Binding of Isaac: Rebirth, The Binding of Isaac: Afterbirth, The Binding of Isaac: Afterbirth † and The Binding of Isaac: Repentance was created by Ridiculon.

The binding of isaac rebirth ost