Improve left-hand dexterity?
I often struggle with left-hand chords and my finger strength! How can I improve this quickly?
Improving finger stamina can be done in a few ways. Firstly, learning scales and arpeggios will really help, so grab a scale book from any retailer and work through them slowly, concentrating on the quality/tone of every note you play. With regards to finger strength, Schirmer’s Scales and Finger Exercises book is also a good place to start. However, if you don’t read music there are some other things you can try which should help anyone wanting to improve their LH/RH keyboard skills!
For improving LH chord playing, pick a 3- or 4-note chord, lock your hand in the shape of that chord and move chromatically (by step/semitone) up/down the keyboard, locked in that position. For example, play Bflat/D/Eflat/G in your left hand and move this shape chromatically.
To increase finger strength, hold down each finger in turn on the keyboard then play the remaining notes around it. So, hold down LH 1st finger on B, then play thumb on C, 3rd finger on A, 4th finger on G, little finger on F. Repeat with your other fingers.
To stretch your hands to increase your span and make it easier to play wider chords, place your (left hand) little finger on any C, your middle finger on the next G up, and then see how far you can push out your thumb to reach the highest note possible.
Broken chords (arpeggios) are great for improving general dexterity/finger strength. Pick any chord and play each note in sequence upwards from the root, then back down in sequence to the root again. The ABRSM Scales& Arpeggios Grade 1 book is a great place to start.