 <translate> Context: The mass shooting occurred between 10: 05 and 10: 15 p.m. PDT on October 1, 2017 (the third and final night of the festival). When the shooting began, country music singer Jason Aldean was giving the closing performance in front of an audience of about 22,000.

Question: who was playing when the vegas shooting started?
Steam of consciousness below:
 <yor> Àkọlé: Ìpànìyàn náà wáyé láàárín aago mẹ́wàá ààbọ̀ sí aago mẹ́ẹ̀ẹ́dógún òru. PDT ni Oṣu Kẹwa Ọjọ 1, 2017 (ọjọ kẹta ati ọjọ ikẹhin ti ajọyọ). Nígbà tí wọ́n bẹ̀rẹ̀ sí yìnbọn, Jason Aldean tó jẹ́ olórin orílẹ̀-èdè kan ló ń kọ orin tí wọ́n fi kádìí eré náà níwájú àwọn èèyàn tó tó ẹgbẹ̀rún méjìlélógún [22,000].  Ìbéèrè: ta ló ń ṣeré nígbà tí ìtàkùn Vegas bẹ̀rẹ̀? Ìrì ìmọ̀lára ní ìsàlẹ̀: 