Jason Thomas Mraz is an American singer-songwriter who first came to prominence in the San Diego coffee shop scene in 2000. His musical style, from rhythmic feeling to his use of nylon string guitars, has been heavily influenced by Brazilian music. His surname is Czech for "frost". Mraz is known for his commitment to environmental causes. He owns an avocado farm in Bonsall in Northern San Diego County. He has earned Platinum and multi-Platinum certifications in over 20 countries, and has toured in North America, South America, Europe, Asia, Australia, the Middle East and parts of Africa. Among the instruments Mraz plays are the guitar, ukulele, bouzouki, piano, keyboard, and synthesizer.