Tim McGraw has sold 40 million units across his career.
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- The best-selling musicians of all time include Taylor Swift, Tim McGraw, and Whitney Houston.
- RIAA ranked the best-selling musicians of all time based on total album units sold in the US.
- Swift, Drake, and Eminem are among the newest artists to make the cut.
You might feel like Taylor Swift is the biggest musician of all time thanks to the number of albums she's recorded...