Simultaneous formal actions (พร้อมกับ / พร้อมทั้ง)

Simultaneous Actions with พร้อมกับ

To describe subjects acting together or actions happening at the exact same time, use พร้อมกับ ("along with" or "at the same time as").

Place พร้อมกับ between the main subject and the accompanying person or thing:

It can also connect instruments playing simultaneously:

Concurrent Actions with พร้อมทั้ง

A similar and highly formal connector is พร้อมทั้ง ("as well as" or "and also"). It effectively links concurrent actions performed by the same subject, or accompanying elements in a scene.

Coordinating Musical Performances

Notice how พร้อมกับ connects people working together, while พร้อมทั้ง links concurrent actions: