Southwest Airlines is expanding its effort to bring midair music concerts to select flights, in a promotional move that is already attracting scorn across social media.

The airline announced a deal with Warner Music Nashville this week to continue the "Live at 35" in-air concert series, which began in 2011, SFGate reported.

Southwest, which operates more than 1 million flights annually, plans to host only about 20 in-flight concerts per year, according to SFGate. But prospective passengers voiced concerns on social media Friday that the music would be disruptive.

A Southwest representative said the company decided to expand the concert series because customers typically appreciate the music once in-flight.

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