But tonight, his heart was a storm. He had just found an old cassette tape of his late father playing a broken blues riff on a nylon-string guitar. He needed to layer a bassline under it, add a dusty drum beat, and record his own voice cracking over the top. He needed the old GarageBand.
This is a common El Capitan bug. Pause the download, restart your Mac in Safe Mode (Hold Shift at boot), then resume the download. Safe Mode flushes the App Store cache. Garageband Mac Os X El Capitan 10.11.6 Download