their 'cosmetic changes' are done at public money and they will pay for it when public gets 'chance' to settle the score...
I got two messages in whatsapp group : which promotes the image of chief of govt :
1- demonetization forced certain mafia dawn in pakistan to commit suicide. Suicide is fact. but reason was way back arrest in 2008 and subsequent court proceedings
2-...
more...

post death of Amma, the tussle of successor was thwarted by same chief...
Both are too bold statements to believe
They have installed 'propaganda machinery everywhere, in govt
off govt
Constantly hammers public.
But if people are not getting bread they will boil and burn at appropriate time....

"Details have not been finalized but no expense is envisaged by Railways as the services are to be operated by selected licensees, through commercial advertisements."
Speaks everything.
And this is not a new thing.
Way back Vaishali express has on time announcement and music play system.
Maintaining...
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this facility is more tough than installation.
At present IR can't even maintain original Toilet Door, Taps and Flush system what we can assume about this so called revenue making machine.
There is another aspect too, Not everyone likes continues music or audio play. There are so many valid reasons for this.

One More Music system as if existing ones are not enough :
Music of Creaking Excel
Music of track
Music of vendor on board
Music of Beggars and eunuchs
Music...
more...

of Mobiles and Laptop in respective classes
and
Last but not least music of current hot topic discussion in country... as any time there will be some issue any where any time in India 24x7