Energise and cheer up your day with the enthusiastic and joyful songs of frogs in their breeding season. This Ultra High Definition nature video and high quality nature sound recording can be played in the background to create a fresh natural atmosphere in your home or place of work. It could be used to enhance your mood and state of being and to help with concetration, relaxation, sleep, studying or working. Filming location: Ropotamo Reserve, Bulgaria.