songs interpreted in Swedish. Lehrer wrote in a letter to the producer Per-Anders Boquist that, "Not knowing any Swedish, I am obviously not equipped to judge, but it sounds to me as though Mr. Ekborg is perfect for the songs," along with further compliments to pianist Leif Asp for unexpected additional flourishes. In 1971, Argentinian singer Nacha Guevara sang Spanish versions of several Lehrer songs for the show/live album Este es el año que es. Composer Randy Newman said of Lehrer, "He's one of the great American songwriters without a doubt, right up there with everybody, the top guys. As a lyricist, as good as there's been in the last half of the 20th century." Singer and comedian Dillie Keane has acknowledged Lehrer's influence on her work. Dr. Demento praised Lehrer as "the best musical satirist of the twentieth century." Other artists who cite Lehrer as an influence include "Weird Al" Yankovic, whose work generally addresses more popular and less technical or political subjects, and educator and scientist H. Paul Shuch, who tours under the stage name Dr. SETI, and calls himself "a cross between Carl Sagan and Tom Lehrer: He sings like Sagan and lectures like Lehrer." Yankovic saw Daniel Radcliffe (who called Lehrer his "hero") perform "The Elements" on The Graham Norton Show, which led to Radcliffe starring in Weird: The Al Yankovic Story. In 2004, British medical satirists Amateur Transplants acknowledged the debt they owe to Lehrer on the back of their first album, Fitness to Practice. Their song "The Menstrual Rag" uses the tune of Lehrer's "The Vatican Rag"; and "The Drugs Song" mirrors Lehrer's song "The Elements", both using the tune of the "Major-General's Song" from The Pirates of Penzance by Gilbert and Sullivan. The Amateur Transplants' second album, Unfit to Practise, opens with an update of Lehrer's "The Masochism Tango" called "Masochism Tango 2008". From January 16 to February 25, 2006, the play Letters from Lehrer, written and performed by Canadian Richard Greenblatt, ran at CanStage in Toronto. It followed Lehrer's musical career, the meaning of several songs, the politics of the time, and Greenblatt's own experiences with Lehrer's music, while playing some of Lehrer's songs. In 2010, the German musician-comedian Felix Janosa released an album with the title "Tauben vergiften: Die bösen Lieder von Tom Lehrer" ("Poisoning pigeons: The Evil Songs of Tom Lehrer"), with German versions of some of his best-known songs.