Lauri Porra (born 13 December 1977) is a Finnish bass guitarist and composer who has written scores for films and other media, as well as commissions from orchestras such as the Lahti Symphony and the Finnish Radio Symphony. He is also known for his work as the bass guitarist in the Finnish power metal band Stratovarius. Porra is a fourth generation musician, and the great-grandson of famous Finnish composer Jean Sibelius.
