First part with Jimmy song, same subject https://www.youtube.com/watch?v=i2-RXTqWDek
Description of 'Hard money/ currency from https://www.investopedia.com/terms/h/hardcurrency.asp
What is 'Hard Currency'
A hard currency is a monetary system that is widely accepted around the world as a form of payment for goods and services. It usually comes from a country that has a strong economic and political situation. A hard currency is expected to remain relatively stable through a short period of time, and to be highly liquid in the forex or foreign exchange (FX) market.
BREAKING DOWN 'Hard Currency'
The most tradable currencies in the world are the U.S. dollar (USD), European euro (EUR), Japanese yen (JPY), British pound (GBP), Swiss franc (CHF), Canadian dollar (CAD), Australian/New Zealand dollar (AUD/NZD) and South African rand (ZAR). The U.S. dollar enjoys status as the world's foreign reserve currency, the reason it is used in 70% of international trade transactions.
All of these currencies garner the confidence of international investors and businesses because they are not prone to dramatic depreciation or appreciation. A depreciation in a nation's currency is the result of either an increase in the money supply or a loss of confidence in its future ability as a store of constant value, because of either economic, financial or governmental concerns. A striking example of an unstable or a soft currency is the Argentinian peso, which in 2015, lost 34.6% of its value against the dollar, making it highly unattractive to foreign investors.