11.   Last Wednesday, Gill and Grant held an impromptu performance at the Double Diamond X guest ranch, where they were staying.

12.   Later, Bono gave an impromptu performance at a shanty town in Soweto.

13.   The singers were resting Thursday and planning to give impromptu performances Friday.

14.   There, on the edge of a shantytown, Bono gave an impromptu performance to delighted residents.

15.   Indeed, the evening was punctuated with military songs, impromptu performances on the guitar and a bit of dancing.