Possible Clues:

• Start pitching?
• Settle as female politician, about to be installed
• Settle into a tent
• Do some pitching, perhaps
• Settle down temporarily in enclosure with a politician
• Settle in for the night after a long march
• Top members of Edinburgh's National Chorus achieve marvellously perfect pitch
• Set up in a glade, say
• Establish a tented site
• Sleep out in a tent