File:Fresco Of Guru Hargobind With Sikh Musicians.jpg
This fresco was located in the pre-1984 Akal Takht complex as per: https://www.sikhsangat.com/index.php?/topic/83145-gurdwara-designs/&do=findComment&comment=706535
This image can also be found at: [1]; [2]; [3]; [4] (no water-mark present on the image at this link)
An outlined reproduction of this mural published in a book can be viewed at: link