2019 at the Winter at Tantora Festival in Al-'Ula, Saudi Arabia, a UNESCO World Heritage Site. Yanni's August 2019 single honoring his daughter Krystalán is called "Ladyhawk", alluding to how she watches over him like a guardian angel. In November 2019, Yanni released single "Blue", taking inspiration from the ocean. In the 2010s, Yanni's international tours included performances in over thirty countries on five continents, including (alphabetically) Argentina, Armenia, Bahrain, Belarus, Brazil, Bulgaria, Canada, Chile, China, Costa Rica, Czech Republic, Egypt, Germany, Hungary, India, Indonesia, Israel, Jordan, Kuwait, Lebanon, Mexico, Oman, Panama, Poland, Qatar, Romania, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Thailand, Tunisia, Turkey, Ukraine, United Arab Emirates, United Kingdom, United States (including Puerto Rico), and Uzbekistan. In August 2020, Yanni released his nineteenth studio album "In His Purest Form," containing solo piano performances of his previously released songs, and his first piano solo album since In My Time (1993). The 2020s In late 2021, Yanni began to offer non-fungible tokens. Influences, music and concerts Musical Influences From childhood, Yanni accepted a wide variety of musical styles, listening to radio stations from Northern Africa, Arab countries, and Europe. He observed that "there were no rock stations or classical stations—each station would just play everything." Yanni's music is said to reflect his encounters with cultures around the world and embody his philosophy of "one world, one people." In this vein, Booth Newspapers' Jeffrey Kaczmarczyk perceived the eclectic inspirations of Yanni's music to be an element of his success: Yanni's "Middle Eastern and Oriental scales and mixed meters sound just exotic enough to entice his middle-of-the-road fans, but not so authentic as to mystify folks who grew up with a backbeat, so you can't lose it," adding that certain songs "leave you with a sense that you've just heard a bit of a steel drum or a Greek bouzouki or a Japanese koto or possibly all three." Yanni's musical influences include music from Asia, Latin America, and the Middle East, as well as classical, rock and roll, and electronic music. Yanni explained that the 1970s, with its new technology and electronic instruments, were particularly influential at that stage in his career, and that even recently his Truth of Touch album (2011) was started by experimenting with new sound designs. Having been exposed to classical music very early in life—listening to Bach at age 8—he counts several classical pianists and composers