Mobile Rhythm Music Game Development

I need a rhythm music game for mobile platforms (iOS and Android) that is a single artist based. The gameplay will be tap-based.

Key Requirements:
- Cross-platform compatibility for both iOS and Android
- Engaging and addictive tap-based gameplay
- High-quality graphics and animations
- Integration of a diverse music library
- User-friendly interface and controls
- Option for multiplayer or competitive modes

Ideal Skills and Experience:
- Proven experience in mobile game development, especially rhythm games
- Proficiency in Unity or similar game engines
- Strong design skills, particularly in UI/UX
- Knowledge of music synchronization in games
- Ability to work within budget and meet deadlines

Please share your portfolio and relevant experience.