PIMA and thumb independence

Fingerstyle begins with a simple idea: each finger has its own strings. Once the thumb plays the bass and the fingers play the treble without thinking, every pattern after this is easier to learn.

By the end of this lesson you will be able to:

• Assign p, i, m and a to the strings they normally play.
• Keep the thumb steady while the fingers play something different.
• Play a four-note pattern cleanly on an open Am chord.

Classical and fingerstyle players label the picking-hand fingers with letters from Spanish:

• p (pulgar): thumb. Plays the bass strings (6th, 5th, 4th).
• i (índice): index finger. Plays the 3rd string.
• m (medio): middle finger. Plays the 2nd string.
• a (anular): ring finger. Plays the 1st string.

Fingers rest on their strings, ready to play. The pinky is not used in basic fingerstyle.

Thumb independence is the key skill: the thumb plays steadily on the beat while the fingers do something different. It does not feel natural at first, because the hand wants to move as one unit. The cure is to practise the thumb alone, then add one finger at a time.

Keep the hand quiet. Only the fingers that are playing move, and they move from the knuckle closest to the hand, not from the whole arm.

Thumb alone, then fingers join.

1. Form Am. Place your thumb on the 5th string and play it once per click for a minute. Keep it steady.
2. Rest your index on the 3rd string. Play thumb, index, thumb, index. The thumb should not hesitate while the index plays.
3. Add the middle finger: thumb, index, middle, index. Then the ring finger: p i m a.
4. Keep the pattern for a minute at a slow tempo. Count 1 2 3 4 aloud.

If the thumb wobbles when a new finger joins, go back one step. The thumb must stay steady.

Do these in order. Each one is small. Tick the ones you have practised.

• 1.Map the fingers

  4 min · 50 → 70 BPM

  1. Form Am. Rest your thumb on the 5th string, index on the 3rd, middle on the 2nd and ring on the 1st.
  2. Pluck each string with its finger in turn: p, i, m, a. One note per click.
  3. Return each finger to rest on its string after playing.

  You have it when

  • All four notes ring clearly and evenly.
  • Each finger stays in its own string.
  I practised this one

• 2.Steady thumb, moving fingers

  4 min · 50 → 70 BPM

  1. Play the 5th string (open A) with the thumb on every click for one minute.
  2. Now add the index finger on the 3rd string, between thumb notes.
  3. Add the middle finger, then the ring finger, one at a time.
  4. The thumb never changes.

  You have it when

  • The thumb stays steady even as the fingers move.
  I practised this one

• 3.Finger independence: i m a m

  4 min · 50 → 70 BPM

  1. On Am, play the 3rd, 2nd, 1st, then 2nd strings: i, m, a, m.
  2. Repeat without stopping, one note per click.
  3. Then add the thumb on the 5th string at the start of every group: p, i, m, a, m.

  You have it when

  • You can repeat the pattern for one minute without stopping.
  I practised this one

Start at 50 BPM, one note per click. A pattern that is not steady at 50 will not be steady at 80. Raise the tempo by 5 BPM only when every note rings.

• Moving the whole hand with each note. Keep the hand still and let only the fingers move. Rest the unused fingers lightly on their strings.
• Plucking with the fingernail or tip inconsistently. Pick one method (flesh or nail) and keep it. The sound should be consistent from finger to finger.
• Letting the thumb follow the fingers. The thumb sets the pulse. Count aloud and make sure the thumb lands on every beat.

Every fingerstyle song, from House of the Rising Sun to a classical study, assumes these assignments. The thumb plays bass notes, the fingers play the tune above.

Try it in: House of the Rising Sun.

Short version (10 minutes)

Do 'Steady thumb, moving fingers' on Am at 50 BPM for five minutes.

Standard version (about 30 minutes)

Do all three exercises, then repeat them on C, keeping the thumb on the 5th string.

• p thumb (bass strings), i index (3rd), m middle (2nd), a ring (1st).
• Rest fingers on their strings.
• The thumb is steady; the fingers can vary.
• Slow and even before fast.

You are ready to move on when you can honestly say:

• I can say which finger plays which string.
• I can keep the thumb steady while the fingers play something different.
• I can play p i m a m on Am cleanly at 60 BPM.