Drums and the metronome aren’t recorded; guitar notes from the backing are.
A LITTLE GUIDE
How do you play the online acoustic guitar?
On an acoustic guitar, steel strings ring brighter and longer, and you can hear the attack of the pick and the body resonance. When you choose a chord from the chord library, the left hand holds that shape on the frets; strum by dragging down or up across the strings over the sound hole. A down strum leans on the bass strings, an up strum on the thin strings.
First exercise: G–D–Em–C
Choose Pop 8ths as the rhythm and G – D – Em – C as the chord progression, then start the rhythm backing. Listen to the backing first, then play the same pattern (down, down-up, up-down-up) yourself with the ↓ ↑ keys.