retz, Wombat's 'Heart of glass' came out on June 7, 2023. Heart of glass is 2 minutes and 31 seconds long and may contain bad words that may be unsuitable for children. Because this song is the only song in Heart of glass and no other songs are present in the album, we classify this track as a single. In terms of popularity, Heart of glass is currently not that popular. Although the overall vibe is very danceable, it does project more negative sounds.

Heart of glass テンポ

We consider the tempo marking of Heart of glass by retz, Wombat to be Moderato (at a moderate speed) because the track has a tempo of 115 テンポ, a half-time of 58テンポ, and a double-time of 230 テンポ. Based on that, the speed of the song's tempo is moderate. Activities such as, walking, can go well with this song. The time signature for this track is 4/4.

Heart of glass キー

This song has a musical key of D♭ Major. This also means that this song has a camelot key of 3B. So, the perfect camelot match for 3B would be either 3B or 4A. While, 4B can give you a low energy boost. For moderate energy boost, you would use 12B and a high energy boost can either be 5B or 10B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 3A or 2B will give you a low energy drop, 6B would be a moderate one, and 1B or 8B would be a high energy drop. Lastly, 12A allows you to change the mood.