(audio example is A#/Bb root on the 1st fret)
You can determine the name of the chord when the root (lowest) note is played on the frets in the chart below.
Here is a popular alternative way of playing the A minor style barre chord. It’s the same form with the exception of the missing note on the 5th string. It is used a lot
because it’s an easier fingering than the full barre chord.
Play the A minor style barre chord on the first 12 frets starting on the 1st fret. Listen to this exercise in the audio example below. You may want to say the names of the chords as you travel up and down the fretboard to help you remember them. The exercise is performed in the audio example below.