yaen made "太陽の化石" available on March 14, 2001. 太陽の化石 is about six minutes long, preciously at 5:57, making this song fairly long compared to other songs. There is only one song in 撤収, so we believe that "太陽の化石" is a single. In terms of popularity, 太陽の化石 is currently not that popular. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.
The tempo marking of 太陽の化石 by yaen is Andante (at a walking pace), since this song has a tempo of 96 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 4/4.
The music key of this track is B♭ Minor. Because this track belongs in the B♭ Minor key, the camelot key is 3A. So, the perfect camelot match for 3A would be either 3A or 2B. While, a low energy boost can consist of either 3B or 4A. For moderate energy boost, you would use 12A and a high energy boost can either be 5A or 10A. However, if you are looking for a low energy drop, finding a song with a camelot key of 2A would be a great choice. Where 6A would give you a moderate drop, and 1A or 8A would be a high energy drop. Lastly, 6B allows you to change the mood.