How many aid concerts has bono done?

Bono, the lead singer of U2, has participated in numerous aid concerts over the years, notably the Live Aid concert in 1985 and its sequel, Live 8, in 2005. He has also been involved in various charitable events and initiatives, such as the Red campaign and other fundraising concerts for causes like HIV/AIDS and poverty alleviation. While it's difficult to pinpoint an exact number of aid concerts he has done, his contributions to humanitarian efforts through music are extensive and well-documented.