Needs assessment (language teaching) ; Sprachandragogik; Volkshochschule; Adult language teaching ; Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; ELE; Español como segunda lengua; ELSE ; FLES ; English as a second language; ESL; TESOL ; Pragmatische Kompetenz; Pragmatic competence; Communicative competence ; Music (phonet.) ; German