giada software package provides Hardcore Loop Machine, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install giada
giada is installed in your system.
Make ensure the giada package were installed using the commands given below,
$ sudo dpkg-query -l | grep giada *
You will get with giada package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Sound |
| Package | giada |
| Version | 0.13.0~dfsg1-1 |
| Description | Hardcore Loop Machine |
| Sub Section | Sound |