September 2026
Box Twelve
E minor pentatonic at the twelfth fret, one chromatic slide in, all sixteenths.
Opens Sep 7. Add the lick now and the board opens with it.
The lick
Two bars, sixteenth notes, standard tuning. Play it clean before you play it fast.
Box Twelve | E minor pentatonic | 16th notes | standard tuning (E A D G B e) Slide in chromatically (11 to 12 on the low E), run the box up and back, resolve on E. Each column is one sixteenth. 16 per bar. " / " = slide. Bar 1 e|-------------------------------12-15-12---------| B|-------------------------12-15----------15-12---| G|-------------------12-14----------------------14| D|-------------12-14------------------------------| A|-------12-14------------------------------------| E|-11/12------------------------------------------| Bar 2 e|----------------------------------------------12| B|-------------------------------------------12---| G|-12----------------------------------12-14------| D|----14-12----------------------12-14------------| A|----------14-12----------12-14------------------| E|----------------15-12-15------------------------| Let the last E ring.
Practice ladder
- 100
- 110
- 120
- 130
- 140
- 150
Clear each rung clean twice before you move up.
Leaderboard
In-app takes are checked on the phone against the click and the note sequence. Web takes are checked by a person.
Approved takes, fastest first. Ties go to whoever posted first.
Entries appear after a quick check.
No approved takes yet. The board opens with the first one.
Rules
- 01One take, no edits, no punch-ins. Metronome audible or visible.
- 02Clean means every note sounds. A miss is a miss.
- 03Post the video on YouTube, Instagram or TikTok with #crankchallenge.
- 04Submit the link below with the BPM you played it clean.
Practice it
Track your climb to the target in Crank.
Add the lick as a fragment, log the fastest clean BPM after each rep, and watch the chart move toward the target.
Opens the app if you have it installed.