Task: Question Generation
Input (English): Passage: After the release of The Red Shoes, Kate Bush dropped out of the public eye. She had originally intended to take one year off, but despite working on material, twelve years passed before her next album release. Her name occasionally cropped up in the media with rumours of a new album release. The press often viewed her as an eccentric recluse, sometimes drawing a comparison with Miss Havisham from Charles Dickens's Great Expectations. In 1998, Bush gave birth to Albert, known as "Bertie", fathered by her guitarist and now husband Danny McIntosh. In 2001, Bush was awarded a Q Award as Classic Songwriter. In 2002, she was awarded an Ivor Novello Award for Outstanding Contribution to Music, and performed "Comfortably Numb" at David Gilmour's concert at the Royal Festival Hall in London.
Kate Bush's eighth studio album, Aerial, was released on double CD and vinyl in November 2005. The album single "King of the Mountain", had its premiere on BBC Radio 2 two months prior. The single entered the UK Downloads Chart at number six, and would become Bush's third-highest-charting single ever in the UK, peaking at number four on the full chart. Aerial entered the UK albums chart at number three, and the US chart at number 48.Aerial, as on Hounds of Love (1985), is divided into two sections, each with its own theme and mood. The first disc, subtitled A Sea of Honey, features a set of unrelated themed songs, including "King of the Mountain"; "Bertie", a Renaissance-style ode to her son; and "Joanni", based on the story of Joan of Arc. In the song "
  
    
      
        π
      
    
    {\displaystyle \pi }
  ", Bush sings 117 digits of the number Pi. The second disc, subtitled A Sky of Honey, features one continuous piece of music describing the experience of 24 hours passing by. Aerial earned Bush two nominations at the 2006 BRIT Awards, for Best British Female Solo Artist and Best British Album.
Output (English): What is the last name of the person who performed "Comfortably Numb" at a concert at the Royal Festival Hall in London?