Bihag is one of the sweetest and most romantic ragas in Hindustani classical music — a tender, melodious night raga whose warm beauty has made it a perennial favourite for both classical and film music. It belongs to the Bilawal thaat, and its most distinctive feature is a subtle, beautiful play between two Madhyams: Bihag is built mainly on the shuddha (natural) Madhyam, but it introduces the teevra (sharp) Madhyam as an occasional, glowing touch, and this delicate contrast gives the raga its characteristic sweetness and shine.
Bihag omits Rishabh and Dhaivat in its ascent, moving through Sa, Gandhar, Madhyam, Pancham, Nishad and Sa, while its descent is fuller and brings in the sharp-Madhyam touch and the other notes. The vadi is Gandhar (Ga) and the samvadi is Nishad (Ni), and the raga's phrases lean tenderly on these notes, giving Bihag a warm, songlike, romantic character. Its Carnatic counterpart is the adapted raga Behag, which shares its sweet, melodious world.
The raga's mood is romantic and joyful, sweet without being heavy. It belongs to the night, and its warm, flowing phrases are made for songs of love and beauty. Bihag is exceptionally melodious and singable, which is why it has been drawn on so often in film music and light classical forms as well as in classical khayal.
Students love Bihag because it is beautiful, approachable and rewarding to sing, while its two-Madhyam play teaches a subtle and important lesson about how an occasional sharp note can transform a raga's colour. Its sweet, romantic mood makes it a joy for expressive singing, and because so many beloved songs live in Bihag, students can apply it widely.
The repertoire and popular legacy are rich. Classic bandishes such as "Kaise Sukh Sove" are cherished, and Bihag has given Indian cinema many unforgettable melodies — the tender "Tere Pyar Mein Dildar" from Mere Mehboob, the beautiful "Piya Bawari" from Khoobsurat, and countless romantic songs. Its sweet, warm beauty keeps it perennially popular with performers and audiences alike.