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The German Language Institute offers an application to learn German for beginners without internet with sound while you sleep. The program is based on the work of Dr. Peter Fries. It uses a method called the "Mozart effect" which is said to increase learning capacity and memory.

German while you sleep is an application that helps people learn German while they sleep. The app plays audio recordings of German speakers uttering the words and phrases, which the user hears while they are asleep. The app is designed to help people learn the basics of German, and it doesn't require an internet connection.

There are many applications that allow you to learn German for beginners without the Internet by sound while you sleep. This is a great way to learn the language because you can listen to the sound while you sleep and it will help you remember what you have learned. Also, these apps usually have a lot of different levels so you can start from the beginning and work your way up as you become more proficient in the language.