Final answer:
The shortcut to add an individual audio track is generally Ctrl + T, but this can vary by digital audio workstation, so checking the specific software manual is recommended.
Step-by-step explanation:
To add an individual audio track to your session using a shortcut operation, the correct key combination would typically be Ctrl + T. However, this can vary depending on the specific software you are using. For example, in Pro Tools, this shortcut is used to create a new track. In other digital audio workstations (DAWs), the shortcut might be different. Always consult the manual or help resources for your particular software to ensure you are using the correct shortcut.