The 67th annual Maine Lobster Festival runs Wednesday through Sunday, July 30 through Aug. 3, in Harbor Park and offers three big nights of live music, as well as various performances throughout each day.

The Thursday evening, July 31, lineup features a bunch of terrific Maine acts; the concerts are included with regular festival admission. Music will run from 5 to 10 p.m. on the Fishermen’s Memorial Main Stage beginning with the Veoyo Twins, featured in the 2012 documentary “Bullied To Silence.”

Katherine and Kristen Veoyo from Hallowell are known for their sweet vocal harmonies and play keyboard and guitar, respectively (although Katherine can be found on the drum kit at rock gigs). Their trio band includes special guest Carter Isaac. Audiences can expect catchy original melodies and lots of vocal harmonies. The 18-year-old Twins also perform distinctively arranged versions of cover songs from Top 40 artists such as One Republic, Christina Aguilera, Imagine Dragons, Lady Gaga, Karmin, Monsters of Men and Taylor Swift; to oldies such as Bob Dylan and Tom Petty.

The girl power continues from 7 to 8 p.m. with singer/songwriter Amy Allen, bringing her blend of pop and country back to the festival; she opened for Randy Houser in 2012 at the age of 20. These days, South Portland’s Allen is fronting Amy & The Engine, a Berklee College-based indie-folk-pop band. Its debut single, "I Got You," is out and about and a full-length album is slated for fall release.

At 8 p.m., David Mallett, one of Maine’s master singer/songwriters will take the stage. In a career spanning four decades, Mallett of Sebec has recorded 14 albums, had several hundred covers of his songs including the American folk classic “Garden Song” and performed in clubs, concert halls and festivals across the United States, Canada and Europe, as well as on numerous broadcasts including “A Prairie Home Companion” … and at the inaugural Belfast Ukulele Picnic in June.

Mallett will be followed at 9 p.m. by his sons Luke and Will Mallett and their nationally touring alt-country/rock Mallett Brothers Band. Their song-driven music is influenced by folk and singer/songwriter genres, and also by harder rock, punk and even psychedelic sounds.

And speaking of the harder stuff, the North Tent will be rocking from 7:30 to 10 p.m. as Chamberlain makes its first Lobster Festival appearance. The Bangor-based garage stomp band, featuring Patti Smith-esque vocals by Kat Johnson, was a hit at last year’s Belfast Free Range Festival and returned for this spring’s Cooped Up mini music fest.

Friday night, Aug. 1, will welcome country stars Daryle Singletary and Confederate Railroad. Tickets for seats to this show in a reserved section in front of the stage are $20 and include gate admission to the festival.

Saturday night, Aug. 2, promises to be a blues-rock blowout in tribute of the late Johnny Winter with Edgar Winter, Vanilla Fudge, Pete Rivera of Rare Earth and Kim Simmonds of Savoy Brown. Tickets for this show are $30 and include festival admission.

Tickets are available online at mainelobsterfestival.com; by phone at (800)-562-2529 (LOB-CLAW) or at either the Camden or Rockland office of the Penobscot Bay Chamber of Commerce. All other musical entertainment is included in festival admission; the full festival schedule is available on the website.