This script automatically generates up-to-date Archlinux pkgbuilds for google-musicmanager, based on the official Debian packages. The PKGBUILD itself can be found on the AUR
Simply clone the repository and run install.sh, which will link the script and its supporting files to the necessary locations.
Install the burp and packer packages if you don't already have them.
google-musicmanager-pkgbuild.sh. Any arguments are passed on to burp. However if you are not the package maintainer (me) uploading to the AUR will fail.