Google offers a number of libraries in Python language to use Google App Engine, the platform-as-a-service that allows to build apps in the cloud. It is allowed to add third party packages to the application. Python documentation available at https://cloud.google.com/appengine/docs/python/refdocs/
Appy Pie, cloud based mobile apps builder, has announced the inclusion of two new music APIs for its Do-it-Yourself mobile application platform. Integration with the SoundCloud and Beatport APIs will allow users to access their music libraries remotely without consuming mobile device memory.