@rocknrroll on Instagram: "Fleetwood Mac performing “Rihannon” live in 1976. 🔮 Stevie Nicks wrote Rhiannon after coming across the name in the novel Triad. She later discovered that Rhiannon is also a figure from Welsh mythology: a strong, mystical woman often linked to magic and transformation. Nicks described the song as being about “a woman taken over by a spirit,” which explains the dramatic energy of her live performances. Over the years, Rhiannon became one of her signature moments on sta