at the Alhambra which was an hour-long program featuring the legendary Spanish guitarist, Andrés Segovia. British composer Peter Seabourne wrote an extended piano cycle Steps Volume 3: Arabesques (2008–2012) based on shared experiences of the Alhambra with his painter aunt Ann Seabourne, and a movement from his Steps Volume 1 is entitled "El Suspiro del Moro" inspired by the legend of the expulsion of the last Moorish King of Granada. In 2000, Julian Anderson wrote a piece for contemporary chamber ensemble, Alhambra Fantasy. In pop and folk music, Alhambra is the subject of the Ghymes song of the same name. The rock band Grateful Dead released a song called "Terrapin Station" on the 1977 album of the same name. It consisted of a series of small compositions penned by Robert Hunter and put to music by Jerry Garcia; a lyrical section of this suite was called "Alhambra". In September 2006, Canadian singer/composer Loreena McKennitt performed live at the Alhambra. The resulting video recordings premiered on PBS and were later released as a 3-disc DVD/CD set called Nights from the Alhambra. The Basque pop group Mocedades performed a song called "Juntos En La Alhambra". Alhambra is the title of an EP recording by Canadian rock band, The Tea Party, containing acoustic versions of a few of their songs. Alhambra and Albaicín are mentioned in the Mägo de Oz song named "El Paseo de los Tristes" from the album entitled Gaia II. In mathematics The Alhambra tiles are remarkable in that they contain nearly all, if not all, of the seventeen mathematically possible wallpaper groups. This is a unique accomplishment in world architecture. M. C. Escher's visit in 1922 and study of the Moorish use of symmetries in the Alhambra tiles inspired his subsequent work on tessellation, which he called "regular divisions of the plane". In film Marcel L'Herbier's 1921 film El Dorado features many scenes shot in and around the Alhambra palace. This was the first time permission had been granted for a feature film company to shoot inside the Alhambra palace and L'Herbier gave prominent place to its gardens, fountains and geometric architectural patterns, which became some of the film's most memorable images. Animated films by Spanish director Juan Bautista Berasategui such as Ahmed, El Principe de la Alhambra and El Embrujo del Sur are based on stories in Washington Irving's Tales of the Alhambra. The Alhambra stands in for