other Washington Post Sunday crossword, March 26 (contains answers)

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Title: Minding Their Businesses
Theme entries: phrases with a word replaced by a celebrity’s name that’s a homonym

Examples:
22A, “Bonanza” star’s hat business?: Greene Berets
80D, Fab Four member’s orienteering business?: Starr Maps

Things I learned, with web links so you can learn them too:

20A, Incus locale: EAR
4D, Lusterware feature: SHEEN
6D, Suffix with hex: ANE [I knew the word hexane but not what it is]
12D, Swift brute: YAHOO [I knew this was something from Gulliver’s Travels but didn’t know what a Yahoo was]
37D, Cross trigram: IHS [yes, I had EHS, thinking Lina Wertmuller was a Lena]
43D, “___ Crime?” (Styne tune): IS IT A
49D, MacArthur return site: LEYTE
105D, Old satellite launcher: AGENA

Overall:
I changed 8 squares, got one wrong, left two blank (though I realized what they were on a later look), and looked up 8 things.