Chill Synth Beat for Rap

I'm looking for a chill, yet engaging beat for a rap song, with a prominent synthesizer. The tempo should not be static, but rather changing throughout the track.

Ideal Skills:
- Beat production
- Proficiency with synthesizers
- Understanding of rap music
- Tempo modulation
- interpret voice tags/ voice from video into the song
- Change chill to more intense/agressive

Experience with creating chill beats and using synthesizers is crucial for this project. Please submit samples of similar work.