Answer
Yes, Antonia has performed in large-scale music festivals. For example, she performed at the Coachella Valley Music and Arts Festival in 2015. This was a major event with over 250,000 attendees. Antonia also performed at the Glastonbury Festival in 2017. This is another major music festival with over 200,000 attendees. These performances demonstrate that Antonia is capable of performing at large-scale events.