From the Screambird site:
The first four tracks by Screambird are now available from two different sources:
You can get them from the Google Play store if you want to support Screambird by buying one or several $0.99 songs. (The store divides revenues with the typical 70/30 split between myself and Google.)
Screambird’s first four tracks (spanning 2011-2012) are also available for free as a torrent.