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I've never had the chance to use this so I'll quote from the ad in Rainbow.
Studio Works is a digital sampler that delivers what other systems promise. Full point and click operation. 56 (512k CoCo 3 only) samples in memory at once; edit TWO samples at once with either of TWO audio clipboards. Functions include: reverse, delete, copy, volume control, play block; sequencer; envelope shape, key-play, play-through, looping, file compression, 5.19-17.05 kHz record rate, BASIC driver program and more! Comes with or without required cable.
Below you will find the Studio Works software disks (in emulator .dsk format) and a PDF of the documentation
To download, right click "View" and select "Save as..."
Studio Works Docs — Studio Works Documentation in PDF
Studio Works Dsk — Studio Works Main Disk
SW Audio Dsk 1 — Studio Works Audio Disk 1
SW Audio Dsk 2 — Studio Works Audio Disk 2
SW Audio Dsk 3 — Studio Works Audio Disk 3
SW Extras Dsk — Studio Works Extras Disk