Refrain Girl - AIris's 'Parallel Hearts' had a release date set for November 27, 2025. With this song being around four minutes long, at 3:53, the duration of this song is pretty average compared to other songs. This track is safe for children and doesn't appear to contain any foul language, since the "Explicit" tag was not present in this track. The song is number 4 out of 11 in Celestia Fragments by Refrain Girl - AIris. The popularity of Parallel Hearts is currently below average in popularity right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.
The tempo marking of Parallel Hearts by Refrain Girl - AIris is Vivace (lively and fast), since this song has a tempo of 165 BPM. With that information, we can conclude that the song has a fast tempo. The time signature for this track is 4/4.
This song has a musical key of E♭ Major. This also means that this song has a camelot key of 5B. So, the perfect camelot match for 5B would be either 5B or 6A. While, 6B can give you a low energy boost. For moderate energy boost, you would use 2B and a high energy boost can either be 7B or 12B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 5A or 4B will give you a low energy drop, 8B would be a moderate one, and 3B or 10B would be a high energy drop. Lastly, 2A allows you to change the mood.
Want to find the BPM and music key for other songs? Check out our BPM and Key Finder page!
| Track | Artist | Key | Energy | Camelot | BPM | ||
|---|---|---|---|---|---|---|---|
| 黄昏時、夏の余韻 | リリヤ・クルトベイ (CV.安齋由香里) | C Major | 8 | 8B | 137 BPM | ||
| Awakening Pulse | NatsuMusic | E♭ Minor | 7 | 2A | 188 BPM | ||
| Radiant Sky | KAMAITACI | D♭ Minor | 10 | 12A | 196 BPM | ||
| Silent Night | カミツキ | A Major | 10 | 11B | 174 BPM | ||
| 不完全エピローグ | REiNa | G Major | 10 | 9B | 169 BPM | ||
| Dreaming bird - ALL AIKATSU! ROCK FES. 2025 at TACHIKAWA STAGE GARDEN [Day] | ななせ | G Minor | 10 | 6A | 180 BPM | ||
| Reboot Zero | NoLoNeyMusicChannel | G Major | 10 | 9B | 169 BPM | ||
| Ghosts_of_Yesterday | Shojo no Yurei, ZANKYO://ERROR | C Minor | 9 | 5A | 180 BPM | ||
| Gravity of Love | TSUCASA | G Major | 10 | 9B | 169 BPM | ||
| 月読命 | 鳴ル神 | E Minor | 9 | 9A | 120 BPM | ||
| EUPHORiA | THE ORCHESTRA TOKYO | C Major | 9 | 8B | 135 BPM | ||
| Flare up | Chalca | F♯ Major | 8 | 2B | 167 BPM | ||
| 義御還へり-よみがえり- | 天嵩~Amata~, 佐乃健介 | F♯ Minor | 8 | 11A | 148 BPM | ||
| Stray Cats | KAMAITACI | D♭ Major | 10 | 3B | 97 BPM | ||
| Astralburst | NoLoNeyMusicChannel | G Major | 10 | 9B | 169 BPM | ||
| ラブレター | 恋 koi | G Major | 10 | 9B | 169 BPM | ||
| ムニュコン・スイッチ | conaco | G Major | 10 | 9B | 169 BPM | ||
| ar - 2025ver. | Devil ANTHEM. | D♭ Major | 9 | 3B | 98 BPM | ||
| 彩羽 | 鳴ル神 | F♯ Minor | 8 | 11A | 130 BPM | ||
| 操り人形 | narumina | E Minor | 9 | 9A | 160 BPM | ||
| シンデレラ | CiON | G Major | 10 | 9B | 169 BPM | ||
| Significant Ritual | 夢ノ結唱 ROSE, 神楽幻 | G Major | 10 | 9B | 169 BPM | ||
| クリアフレア | Kolokol | A♭ Major | 10 | 4B | 135 BPM | ||
| lulu. (From "Frieren: Beyond Journey's End Season 2") - English Version | Xoxo Chan | G Major | 10 | 9B | 169 BPM | ||
| Kagaribi Bounce | Refrain Girl - AIris | F Minor | 6 | 4A | 96 BPM |