"Death by Glamour (Unused Vocal Version) - Undertale" is a high quality rip of the unused vocal version of "Death by Glamour" from Undertale.
The advertised track is mashed up with "Lucky Strike" by Maroon 5.
This rip is associated with another rip, "Death by Glamour - Undertale", which uses the instrumental version of "Lucky Strike" without the vocals. These rips were both uploaded at 9:30 a.m. UTC.
Both of these rips are notable for having the songs playing in their original keys ("Death by Glamour" is played in the key of E minor and "Lucky Strike" is played in the key of D minor), so they end up sounding a bit off. This would later be fixed in the rip "Death By Glamour (Complete Mix) - Undertale", where "Lucky Strike" is edited to play in the key of E minor.