No. GarageBand 10.4 and newer require macOS 10.13 High Sierra or later. El Capitan users are limited to versions 10.2 or older.
Strengths
Note that these packages are often updates and may require a base installation of the iLife software suite from an original installation DVD to function properly. System Maintenance and Optimization Garageband Mac Os X El Capitan 10.11.6 Download
While internal audio works, an external USB or FireWire audio interface will provide better, low-latency audio recording. Strengths Note that these packages are often updates
If you open the App Store on an El Capitan machine and attempt to download GarageBand normally, you will likely encounter an error message stating that the software is incompatible with your operating system. To bypass this restriction, you must use specific workarounds to access Apple's legacy software repository. Method 1: The "Purchased" Tab Workaround (Recommended) To bypass this restriction, you must use specific
Use the Purchased Tab method with an Apple ID that has claimed GarageBand before. If that fails, use a newer Mac to "purchase" the app for free, then return to your El Capitan machine. Avoid third-party websites at all costs.
– A free, open-source audio editor and recorder that runs on older Macs. While not a full DAW like GarageBand, it is excellent for basic recording and editing.