Using amsynth Synthesizer on Ubuntu.

I installed amsynth synthesizer and jack-keyboard:
sudo apt install amsynth
sudo apt install jack-keyboard

I started QJackCtl
Clicked Setup/Settings/Midi_Driver/seq Advanced/Output_Device/hw:Generic, 0
Advanced/Input_Device/hw:Generic, 0 Ok
Then I clicked on Start

Then I started amsynth and Jacke-keyboard
On Jack-keyboard clicked on Connect/system:midi_playback_2

Selected BriansBank01 on amsynth

and started playing on Keyboard

V B N J Q W E R

which played the notes

सा रे ग म प ध नी सा

Next I need to record what is being played.

sudo apt install jack-capture
sudo adduser <username> audio
jack_capture -mp3

and I made first attempt to play a song and result is as follows:
Shared file on Drive.

Update 04 May 2020
Today I hooked up android midi keyboard to the Laptop:

Notice the Jack Connection: