Mor lam (Thai/Isan: หมอลำ [mɔ̌ː lam]; rtgs: Mo-lam) is a traditional Lao form of song in Laos and Isan.Mor lam means expert song, or expert singer, referring to the music or artist respectively. Other romanisations used include mor lum, maw lam, maw lum, moh lam and mhor lum. In Laos, the music is known simply as lam (ລຳ); mor lam (ໝໍລຳ) refers to the singer.The characteristic feature of lam singing is the use of a flexible melody which is tailored to the tones of the words in the text.