>> reporter: among the others silenced here 34-year-old opera singer maria radner who was traveling with her husband and baby. radner had just completed performances in barcelona with her colleague, oleg bryjak who died alongside her. >> this is tearing a huge gap and there will be scars left over. >> reporter: at this headmaster's school in germany, they are mourning the loss of 16 young students and two instructors. one teacher was recently married. the other, engaged. >> they had plans for their life and that was changed from one minute to the next. like a burst the bubble. >> reporter: the school group had just finished an exchange program at this school in spain. outside, two students mourned over their final photo with their friends.