"Eros Always Arriving Intensely" ( Bill Nelson vs Eduardo Oliveira ) A combination of pre-recorded sounds. Bring your mixes to Audioboots Mashup forum - http://audioboots.com/
If you aren't familiar with the work of Bill Nelson, you'll find it totally satisfying. This is a very early track of his I've used. He has an impressive discography. https://www.billnelson.com