Hi. I am going through the bar chords lessons. I am finding when the root 6 7th chords, the D string is muted. I assume its a strength issue in my first finger. Any advise / exercises to strengthen this?
Yes, that’s a common issue. You’ll likely find it even more of an issue when you get to the minor 7th chord.
It is partly strength, but also positioning the hand properly.
First I’ll recommend the you go back and work on the bar chord exercise that I teach in the course. Do it twice a day for a week… just 5 minutes or so each session. Listen to each of the notes as you do the exercise and work to get them to sound clear.