I loved that sound. But apparantly they have removed it in this new LTS. Any way to get it back?
To add back the startup sound click on the power menu in the top right and select Startup Applications:
Then select the Add button to add a new command and enter the following in the respective boxes:
Name: GNOME login sound
Command: /usr/bin/canberra-gtk-play --id="desktop-login" --description="GNOME Login"
Press the Add button, close the Startup Applications box and reboot to enjoy your old sound again!