 On 13 July 1985 , Page , Plant , and Jones reunited for the Live Aid concert at JFK Stadium , Philadelphia , playing a short set featuring drummers Tony Thompson and Phil Collins , and bassist Paul Martinez . Collins had contributed to Plant 's first two solo albums while Martinez was a member of Plant 's solo band . The performance was marred by a lack of rehearsal with the two drummers , Page 's struggles with an out @-@ of @-@ tune guitar , poorly functioning monitors , and Plant 's hoarse voice . Page described the performance as " pretty shambolic " , while Plant characterised it as an " atrocity " . 
