In "Isn't This a Lovely Day (to be Caught in the Rain)", while Rogers is out riding, a thunderstorm breaks and she takes shelter in a bandstand. Astaire follows her and a conversation about clouds and rainfall soon gives way to Astaire's rendering of this, one of Berlin's most prized creations. Astaire sings to Rogers' back, but the audience can see that Rogers' attitude towards him softens during the song, and the purpose of the ensuing dance is for her to communicate this change to her partner. The dance is one of flirtation and, according to Mueller, deploys two choreographic devices common to the classical minuet: sequential imitation (one dancer performs a step and the other responds) and touching. Initially, the imitation is mocking in character, then becomes more of a casual exchange, and ends in a spirit of true cooperation. Until the last thirty seconds of this two and a half minute dance the pair appear to pull back from touching, then with a crook of her elbow Rogers invites Astaire in. The routine, at once comic and romantic, incorporates hopping steps, tap spins with barrages, loping and dragging steps among its many innovative devices. The spirit of equality which pervades the dance is reflected in the masculinity of Rogers' clothes and in the friendly handshake they exchange at the end.