This MP3-CD contains 1300 recordings of 304 species found in Holland and Belgium. The disc has a total playing time of over 15 hours, with a total file size of 995 MB.
For the first time in 20 years a complete new set of recordings was made in the field. For 5 years the author Peter Boesman traveled extensively to many excellent birdwatching sites of Belgium and the Netherlands. He recorded hundreds of hours and made a careful selection for this MP3-CD. Nearly all recordings were recorded in stereo with the newest digital equipment using Telinga stereo microphones. Every soundtrack shows extra information such as when and where the recordings were made and background species.