Grachtenfestival (Canal Festival)
The Netherlands' largest classical and jazz music festival brings around 200 concerts to churches, gardens, living rooms and the canals themselves over ten days, spotlighting young musical talent under 35. Many neighborhood concerts are free, with select premium shows ticketed.
Event link: https://www.grachtenfestival.nl/
Price: Free–€35 depending on venue
Source: amsterdamtips