After watching Wales cut apart Scotland with pace, guile and great continuity work, O'Sullivan knows what is needed to end a long, hard season on a high.

BBC: SPORT | Rugby Union | Six Nations | Decision time for O'Sullivan

Scotland have not beaten Argentina since 1990 but Hadden hopes continuity of selection will work in his favour at the Stade de France.

BBC: Scotland unchanged for Pumas game

We're hearing irregular rhythms, we're hearing instruments asked to go to the extremes of their capability, but we're also hearing patterns that we recognize, with pacing, contrast, fascinating harmonies, continuity all the basic principles of what makes a piece of music work are all there.

NPR: Stravinsky's Riotous 'Rite of Spring'