Each week, Hoopla and the Iowa Cultural Corridor Alliance team up to showcase arts and culture events in Eastern Iowa. Below are the hidden gems:   Riverside Theatre in Iowa City presents the National New Play Network Rolling World Premiere of The Exit Interview by William Missouri Downs, directed by Ron Clark. The Exit Interview is a uniquely entertaining philosophical comedy; a theatrical romp into the circus of the soul.  Shows run Friday, January 25 through Sunday, February 17. The playwright will attend Riverside Theatre’s opening night performance on January 25, and will participate in a post-show discussion with the audience. Tickets are available at the Riverside Theatre Box Office, 319-338-7672.   The Amana Colonies Convention and Visitors Bureau invites you to warm your spirit at the 7th Annual Winterfest! The festival will be held this Saturday, January 26, from 8:00 a.m. – 11:00 p.m. throughout the village of Amana. Enjoy open fire chili, wine walk, 5k Amana Freezer walk/run, live music, ice sculpting, demonstrations, dancing at the Snow Ball, log sawing, "ham put" contest and much more! Admission is free. A full schedule of events is available at festivalsinamana.com.   The Coralville Center for the Performing Arts presents a concert staging of Rodgers and Hammerstein's classic Broadway musical, Carousel - A Concert, this Saturday, January 26. This production features the classic numbers "If I Loved You," "June Is Bustin' Out All Over," and "You'll Never Walk Alone." Baritone Stephen Swanson of the UI School of Music portrays the carnival barker Billy Bigelow, and the score is ably performed by a thirty-four piece orchestra under the baton of UI Professor Emeritus Ed Kottick. Shows are at 2:00 & 7:30 p.m. Tickets are $20 and $14 student/senior.   In anticipation of Vusi Mahlasela’s February 12 concert, Legion Arts is screening the acclaimed film, Amandla! A Revolution in Four-Part Harmony, that helped put Vusi on the world music map. The event is this Sunday, January 27, 2:00 p.m. at CSPS Hall in Cedar Rapids.  Director Lee Hirsch spent nine years putting together this ambitious and moving documentary chronicling the use of music as a form of potent social protest against Apartheid in South Africa. Interviews and archival footage help tell the stories of figures like Vusi, Hugh Masekela, Miriam Makeba, Abdullah Ibrahim and Vuyisile Mini, people who became instrumental in the successful fight against oppression. This study in courage won the Audience and Freedom of Expression awards at the 2002 Sundance Film Festival, and was also nominated for the Grand Jury Prize. Admission is a free will donation.   Tapestry and Friends will perform at Cornell College as part of the Music Mondays Concert Series on Monday, January 28, at 7:30 p.m. in King Chapel. A favorite of Music Mondays audiences, the Boston-based female vocal ensemble returns to perform a program including the world premiere of a work by James Falzone featuring the Cornell College Chamber Singers and clarinetist Joe Dieker, Cornell’s academic dean. General admission is $10 ($5 for students) at the door.