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 form of Hindu music in classical India.
The most common Hindu bhajan in North India is "Om Jai Jagdish Hare." The names of Gods are religiously chanted, often including Vishnu and his incarnations, Shiva and the Goddess (Parvati, Shakti, Vaishnodevi).
A devotional song is a hymn that accompanies religious observances and rituals. Traditionally devotional music has been a part of Hindu music, Jewish music, Buddhist music, Islamic music and Christian music.
Each major religion has its own tradition with devotional hymns. In Christianity, the devotional has been a part of the liturgy in Roman Catholicism, Lutheranism, the Greek Orthodox Church, the Russian Orthodox Church, and others, since their earliest days. A devotional is a part of the prayer service proper and is not, in these contexts, ornamentation. Within the Reformed tradition, church music in general was hotly debated; some Puritans objected to all ornament and sought to abolish choirs, hymns, and, inasmuch as liturgy itself was rejected, devotionals.