21st Century (2008). Thea Musgrave decided to write some pieces for pairs of instruments, partly for use in teaching and partly for the fun of hearing two of the same instruments performing together as they do in Mozart or Haydn Symphonies. The composer asked oboist Nicholas Daniel for some tricky technical challenges that one might be asking students to work on that could be difficult to have in a solo piece. The composer incorporated: realisation of low Bb; finger coordination challenges using intervals from D flat to E flat to E natural, and B flat to B natural; shared melodic lines to facilitate matching sound quality; high register playing to force the practice of top note fingerings at all dynamics, but particularly piano and cantabile.