RAGBRAI participants will ride through Ames Tuesday, bringing more than 20,000 people to the city. The Ames RAGBRAI Entertainment Committee has announced the headline acts for the evening will include The Spazmatics, a “New Wave” band that covers songs from the 1980s, and B2wins, a pop duo of twins from the slums of Brazil. The festival will start at 4 p.m. and run until approximately midnight.

The Spazmatics, which formed in 1983 by then physics teacher Kevin Stigwood after he lost a debate to a student, features costumes including bowties, taped glasses and pocket protectors, as a tribute to the 1984 film Revenge of the Nerds.

B2Wins is made up of Brazilian twin brothers Walter and Wagner Caldas, who were born in the at-risk neighborhood of Niteroi in Rio de Janeiro, Brazil. Despite growing up in poverty, the brothers escaped their surroundings through music and started teaching others to do the same in the orchestra in which they taught. Using music as a positive outlet and social movement, the duo plays pop music on classical instruments with an electric violin and ukulele.

Other RAGBRAI acts include local country music artist Danny Grause on the Burnette Stage and classic rock band Richard Arndt and The Brew on the Main Street Stage. Another stage will feature different variety acts such as jugglers and fire breathers.

Entertainment is open to the public and free for all ages.

Entertainment schedule

Main Street Stage

4:30-6 p.m.   Dan Tedesco

6:30-9:30 p.m.   The Spazmatics

10 p.m.–12 a.m.   Richard Arndt and the Brew

Burnett Stage

4–5:30 p.m.   42- Romeo

6-7:45 p.m.  The Feel Right Band, ft. Sharane Calister from “The Voice”

8–10 p.m.   B2wins

10:30 p.m.–12 a.m.   Danny Grause

First National Bank Stage

(Kellogg Ave)

4–6 p.m.   Jenerik and The Off Brands

6–7 p.m.  Dramatic Readings

7–9 p.m.  Cirque Wonderland  Entertainment

9–10 p.m. LAVISH

10-11 p.m. B. Well