Frank Sinatra’s 1966 hit “That’s Life” is a brassy anthem to resilience. Backed by a big-band orchestra and gospel-tinged choir, Sinatra growls about life’s ups and downs and vows he’ll bounce back every time. His larger-than-life delivery struck a chord – “That’s Life” hit No. 4 and became one of his signature songs, embodying Sinatra’s never-say-die spirit.