IIIX's ' "Bittersweet Echo" was released on its scheduled release date, September 17, 2025. The duration of This song is about 3 minutes long, at 3:27. Based on our data, This song appears to be safe for all ages and is not considered explicit. This track is about the average length of a typical track. Because this song is the only song in Bittersweet Echo and no other songs are present in the album, we classify this track as a single. Going off of the ISRC code of this track, we detected that the origin of this track is from Japan. In terms of popularity, Bittersweet Echo is currently unknown. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.
The tempo marking of Bittersweet Echo by IIIX is Andante (at a walking pace), since this song has a tempo of 94 BPM. With that information, we can conclude that the song has a slow tempo. This song can go great with yoga or pilates. The time signature for this track is 4/4.
This song is in the music key of F♯ Minor. This also means that this song has a camelot key of 11A. So, the perfect camelot match for 11A would be either 11A or 10B. While, a low energy boost can consist of either 11B or 12A. For moderate energy boost, you would use 8A and a high energy boost can either be 1A or 6A. However, if you are looking for a low energy drop, finding a song with a camelot key of 10A would be a great choice. Where 2A would give you a moderate drop, and 9A or 4A would be a high energy drop. Lastly, 2B 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 | ||
|---|---|---|---|---|---|---|---|
| Blue Wind | 田中有紀 | F Major | 9 | 7B | 150 BPM | ||
| After Run | シーズ | G Major | 7 | 9B | 160 BPM | ||
| KIRA☆GIRA INFINITE! | プリンセス・ミーティア(CV.橘杏咲), プリンセッション・オーケストラ | E Minor | 9 | 9A | 188 BPM | ||
| オレンジのままで | Liella! | G Major | 10 | 9B | 176 BPM | ||
| SOULISM | 識辺かがり(CV.藤本侑里), プリンセッション・オーケストラ | G Major | 8 | 9B | 170 BPM | ||
| 紫炎 | Roselia | C Major | 10 | 8B | 190 BPM | ||
| Cyber Parkour | ストレイライト | F Minor | 9 | 4A | 146 BPM | ||
| 浅草Guilty Girlの歌 (高橋ポルカ(CV.綾咲穂音) from いきづらい部!) | いきづらい部! | B♭ Major | 10 | 6B | 180 BPM | ||
| Do you believe in music? | 一ノ瀬 怜 (CV:結城萌子), 佐伯遙子 (CV:佐々木奈緒) | A♭ Major | 9 | 4B | 124 BPM | ||
| ルカ | ウィーン・マルガレーテ (CV.結那) | E Major | 10 | 12B | 148 BPM | ||
| 星屑カンパネラ | 成宮すず (CV:相川奏多) | F♯ Major | 9 | 2B | 130 BPM | ||
| 蜃気楼の向こう側、君は笑ってくれるかな | 鳳 ここな (CV.石見舞菜香), 流石知冴 (CV.佐々木李子) | F Major | 10 | 7B | 120 BPM | ||
| Bittersweet Echo | IIIX | F♯ Minor | 9 | 11A | 94 BPM | ||
| ドライブ・スペード・クレイジー | Edel Note | A♭ Major | 7 | 4B | 175 BPM | ||
| てくてく日和 | 桜小路きな子 (CV.鈴原希実) | F Major | 9 | 7B | 128 BPM | ||
| ENDLESS DANCE - 花海佑芽・秦谷美鈴・十王星南 ver. | 初星学園, 花海佑芽, 秦谷美鈴, 十王星南 | A Minor | 9 | 8A | 153 BPM | ||
| 天地黎明 | Edel Note | A Major | 9 | 11B | 176 BPM | ||
| レム | DOLLCHESTRA | G Major | 10 | 9B | 90 BPM | ||
| SUPREME STARS !!! | 315 ALLSTARS | D Major | 9 | 10B | 176 BPM | ||
| LINKs | ストレイライト | A Major | 8 | 11B | 103 BPM | ||
| 真夜中遊園地 | 夢限大みゅーたいぷ | C Major | 10 | 8B | 98 BPM | ||
| SOL de ROSA | 宮下 愛 (CV.村上奈津実), 鐘 嵐珠 (CV.法元明菜) | B Major | 9 | 1B | 107 BPM | ||
| ルピラ | アルストロメリア | F Major | 8 | 7B | 124 BPM | ||
| バルピネ (feat. 棗いつき) | Vivid Lila, 棗いつき | D♭ Major | 10 | 3B | 168 BPM | ||
| チョコラブキッス | TRINITYAiLE | F Major | 8 | 7B | 91 BPM |