1 load the video2 pick a song & hit go (or keys 1–5)3 press play — the click follows the chart4 TAP (Space) on every eighth-note pulse → read the ms errors5 apply phase / BPM · drag the waveform ticks onto the drum hits6 a section changes feel? split at the playhead, edit its grouping
drag slides the grid · Shift+drag STRETCHES the grid around the anchor (fixes drift) · Space+drag pans · wheel zooms at cursor · double-click seeks · gold = downbeat, white = group start
no taps yet — play the video, pick the song, tap the eighth-note pulse