Language Tandem You would like to learn a new language or are looking to improve your already existing language skills? Then look no further! The Language Tandem at the DAI library can help you with just that. Our library staff is happy to find you a tandem partner with whom you can practice and learn a language through personal conversations. The Language Tandem is open to all nationalities, not just native German and English speakers. To participate in the Language Tandem please register for a library membership. Curious? Contact our library staff during opening hours or send us an email.