

Awaken to a new dream of Fairytale heroes and fantastical enemies.Role: ComposerDeveloper/Publisher: Gaudium & EIGHT STUDIOPlatforms: Android, iOS
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Intro cutscene and main menu music by XYNSIA. Remaining music in beta test gameplay video by Batterfingers.^
Grand Alliance is an anime style mobile RPG that takes place in a fantasy world on the brink of war.Role: ComposerDeveloper: GaudiumPublisher: Crunchyroll Games, VIZ MediaPlatforms: Android, iOS
Grand Alliance is an anime style mobile RPG that takes place in a fantasy world on the brink of war.Role: ComposerDeveloper: GaudiumPublisher: Crunchyroll Games, VIZ MediaPlatforms: Android, iOS
Payment is accepted via Wise (preferred) or bank transfer. PayPal is available if needed, with an added processing fee. A deposit is required to begin; for larger projects, the balance is split across milestones. The final invoice is issued upon delivery of all completed files.
Unless stated otherwise, all music includes exclusive rights and a commercial license for your project.
My portfolio offers examples of my recent work and stylistic range. If you have a particular direction or sound in mind, feel free to reach out with questions. This helps us determine whether I’m the right fit for your needs—or if a referral to another professional might be more suitable.
Awaken to a new dream of Fairytale heroes and fantastical enemies.Role: ComposerDeveloper/Publisher: Gaudium & EIGHT STUDIOPlatforms: Android, iOSMusic from 1:42 to 18:07 by Batterfingers. Remaining music by XYNSIA.
Echoes of Astra is an anime trading card game that combines tactical boardgame elements with beautiful art from anime artists around the globe. High quality cards, collectability, and balanced gameplay stand at the core of its design philosophy.Role: Composer (Promotional Music)By: Parhelion Studio
Grand Alliance is an anime style mobile RPG that takes place in a fantasy world on the brink of war.Role: ComposerDeveloper: GaudiumPublisher: Crunchyroll Games, VIZ MediaPlatforms: Android, iOS
• Custom music composition (themes, background tracks, etc.)
• Arranging and orchestration
• Audio mixing
• Audio implementation (Unity, Unreal Engine, FMOD, Wwise)
Music can be created in a variety of styles and genres—please feel free to ask about specific directions or influences.
If sound design is required, referrals or suggestions can be provided upon request.
$400–$600 USD per finished minute of music, including exclusive rights and a commercial license. Full project rates are negotiable based on scope.
Dynamic/adaptive music and other services are quoted individually—please contact for details.
1. Project details and requirements are discussed.
2. A quote, scope, and timeline are provided.
3. Written agreement is confirmed/signed.
4. Initial drafts or sketches are delivered for review.
5. Revisions are made based on client feedback.
6. For larger projects, assets are delivered and approved in batches at milestones.
7. Final files (e.g., WAV, OGG) are delivered upon completion and final payment.
Single assets are typically delivered within 1-2 weeks. For larger or multi-asset projects, timelines and milestones are discussed and agreed upon at the start.
Unlimited revisions are included per music track.
Please feel free to contact me to discuss your project. If you have references, a preferred timeline, budget, or specific ideas, including them up front is always appreciated. I’ll review the details and provide a quote and clear timeline.
• Custom music composition (themes, background tracks, etc.)
• Arranging and orchestration
• Audio mixing
• Audio implementation (Unity, Unreal Engine, FMOD, Wwise)
Music can be created in a variety of styles and genres—please feel free to ask about specific directions or influences.
If sound design is required, referrals or suggestions can be provided upon request.
$400–$600 USD per finished minute of music, including exclusive rights and a commercial license. Full project rates are negotiable based on scope.
Dynamic/adaptive music and other services are quoted individually—please contact for details.
1. Project details and requirements are discussed.
2. A quote, scope, and timeline are provided.
3. Written agreement is confirmed/signed.
4. Initial drafts or sketches are delivered for review.
5. Revisions are made based on client feedback.
6. For larger projects, assets are delivered and approved in batches at milestones.
7. Final files (e.g., WAV, OGG) are delivered upon completion and final payment.
Single assets are typically delivered within 1-2 weeks. For larger or multi-asset projects, timelines and milestones are discussed and agreed upon at the start.
Unlimited revisions are included per music track.
Please feel free to contact me to discuss your project. If you have references, a preferred timeline, budget, or specific ideas, including them up front is always appreciated. I’ll review the details and provide a quote and clear timeline.
Hello! My name is Jeffrey Yiu, and I am a composer and pianist based in Vancouver, Canada, working under the artist name Batterfingers.Previously, I worked with the game development team Gaudium on two mobile games, Grimlight, an RPG inspired by fairy tales with an anime aesthetic, and Grand Alliance, a strategy RPG published by Crunchyroll Games.For business inquiries, soundtracks, or collaborations, please don't hesitate to send me a message via email or the social media links above.