Since the crackdown on street vendors selling vials of "authentic" Tom Petty blood, it's been harder than ever to get close to famous musicians. Go under the influence of genuine rock masterpieces with today’s Groupon: for $9, you get a general-admission ticket to see Donavon Frankenreiter and special guest Mishka on July 13 at Mulcahy’s Pub and Concert Hall in Wantagh. Doors open at 8 p.m.

Donavon is a surfer-turned-musician whose self-titled debut was released on Jack Johnson’s Brushfire Records and made the ARIA top 40 charts in 2004. In Mulcahy’s 1,400-person sound-o-sphere, his surf rock ballads, such as “It Don’t Matter” and “Move By Yourself,” will have the full force of live emotion and quality sound to superbly strum heartstrings and tickle earbones. Donavon’s Bermudan musical companion, Mishka, also has roots in the sea soil, having spent much of his childhood sailing and windsurfing before turning to reggae’s guitars and off-beat rhythms. In 2009, Mishka was named Best New Artist in the singer/songwriter category by iTunes.

Mulcahy’s, which was named Long Island Press’s 2nd Best Sports Bar, is as equipped to pump out sound as it is to pump out frothy brews. Smoke machines and stage-high dancing cages add to the festive atmosphere. Giant screens show close-ups or visuals above the heads of music lovers who, craving a glimpse of their idols, are pressed closer together than two pancakes underneath another pancake.

Must be 18+ to attend, 21+ to drink alcohol.

Reviews

Donovan Frankenreiter was reviewed by PopMatters, and his album Dig received a four-star average rating from Amazon users. Pegasus News reviewed Mishka, and Amazon users give his self-titled album an average rating of 4.5 stars. Mulcahy's Pub and Concert Hall was voted 2nd Best Sports Bar on Long Island by the Long Island Press.

• Frankenreiter fleshes out the playful, rhythmic foundation on which his style is built, supplementing his acoustic center with vibrant bass lines, soft and soulful keys, and the intermittent horn part. – Aarik Danielsen, PopMatters
• It Don't Matter is the anthem of my summer. This opening track is one of the sweetest, funkiest, grooviest tracks I've heard in a long, long time. – Blackberries, Amazon
• [Mishka's] laid back beats and Rastafarian ideals came across beautifully in his performance. – Jessica Harp, Pegasus News