Soothing Stress Relief Audio

I'm looking for a text-to-speech recording for a relaxation audio aimed at stress relief with approx. 5,500 words in uk english. The audio should feature a calming and soothing tone, female voice, accompanied by soft instrumental music in the background at the beginning and at the end (optional).

Requirements:
- High-quality text-to-speech technology
- Professional, calm, and soothing voice
- Integration of soft instrumental music

Ideal Skills:
- Experience in audio production
- Proficiency in text-to-speech software
- Ability to select and blend background music