This is a good audio recording app that's extremely lightweight and requires minimal dependencies. It records your microphone and, if desired, your system sounds.
https://github.com/shampuan/Echo-Voice-Recorder
5 audio formats: wav, mp3, ogg, flac, aac.
7 language options: Azerbaijani, German, English, Spanish, French, Turkish (default), Russian.