While Austin Mahone is gearing up for his upcoming summer tour, the 18-year-old is treating fans to a little preview.

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Through his Twitter account, Mahone posted a quick snippet of himself singing Chris Brown's hit song Forever. Mahone wrote, "A little forever before bed" with a Vine video of his acapella performance.

Mahone has been busy getting ready for his big summer tour across North America since returning from promoting his EP The Secret overseas. Supporting the singer on his summer tour are girl group Fifth Harmony, Vine singer Shawn Mendes and band The Vamps.

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Mahone has been in Miami preparing for his tour, with constant rehearsals and fitness workouts, including running on the beach. On June 10, Mahone even wrote on Instagram "Running on the beach will be the death of me" with an exhausted looking selfie.

Hopefully his summer tour will help his record sales. Although The Secret initially debuted at number one on iTunes, it didn't sell as well as hoped by record executives. In June during a New Music Seminar Republic Records executive Avery Lipman said about Mahone, "The kid can close down any mall in America, but we are struggling to sell a meaningful amount of records."

Mahone's headlining summer tour will kick off in San Antonio on July 25 with stops across the United States, including Los Angeles, Las Vegas and New Jersey.

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