The term 'Indian Musical Mode' refers to a raga, which is a melodic framework used in Indian classical music. A raga is composed of a series of notes that are arranged in a particular order and can be used to create a melody. The notes of a raga are often associated with certain emotions or moods, and the use of a raga can evoke these feelings in the listener. Ragas are also used to structure improvisation and composition in Indian classical music.