"Heartache - Undertale" is a high quality rip of "Heartache" from Undertale.
The advertised track is mashed up with "Space Jam", but the time signature of "Heartache" is 6/8, and the time signature of "Space Jam" is 4/4. Because of this, "Space Jam" is cut up and rearranged to fit with "Heartache".
This rip was originally uploaded to the GiIvaSunner channel on March 23, 2016.
This particular rip was met with mixed reception. Some people say that the way "Space Jam" was edited makes this rip sound bad, and that "Space Jam" mashups in general are the easiest and laziest mashups. However, others say that the time signature edit requires more work than the average mashup, and consider it an impressive rip.
- The catchphrase is a reference to Toriel, who refers to the protagonist as "my child".