Hindu music is music created for or influenced by Hinduism. It includes Indian classical music Kirtan Bhajan and other musical genres. Raagas are a common way of Hindu music in classical India.
The most common Hindu bhajan in North India is "Om Jai Jagdish Hare." Gods are religiously chanted to often include Vishnu and his incarnations, Shiva and the Goddess (Parvati, Shakti, Vaishnodevi).
Very common scale in Hindu music is 1 2 3 4 5 6 7, which can be harmonized into a chord progression
A bhajan is a Hindu devotional song, often of ancient origin. Bhajans are often simple songs in lyrical language expressing emotions of love for the Divine, whether for a single God/Goddess, or any number of divinities. Many bhajans feature several names and aspects of the chosen deity, especially in the case of Hindu sahasranamas, which list a divinity's 1008 names. Great importance is attributed to the singing of bhajans with Bhakti, i.e. loving devotion. "Rasanam Lakshanam Bhajanam" means the act by which we feel more closer to our inner self or God, is a bhajan. Acts which are done for the God is called bhajan.