Hope this helps! It is broken up by parts. It will help more if you listen to this with your music in hand! There is no text, just your part. The Introduction track explains what you will be hearing.

1st Bass

Introduction

Introit (1st Bass)

Introit- square 9 (1st Bass)

In Paradisum-begins at square 101 (1st Bass)

2nd Bass

Introduction

Introit- (2nd Bass)

Introit- begins at square 9 (2nd Bass)

In Paradisum- begins at square 101 (2nd Bass)