Lithuanian Opera Rounds Out Prototype Festival Lineup The "Prototype: Opera/Theater/Now" festival of avant-garde chamber opera and musical theater has added one stage production - the American premiere of "Have a Good Day!" by the Lithuanian composer Lina Lapelyte - as well as two concerts to the schedule it announced in July. It has also set the dates for the individual productions. Ms. Lapelyte's opera, which has a libretto by Vaiva Grainyte, looks at the inner lives and secret passions of a group of robot-like cashiers at a shopping center. The production is by Operomanija, a group of independent poets, composers, directors, musicians and visual artists based in Vilnius, Lithuania. It runs Jan. 15-19 at Here, the Greenwich Village arts center that is co-producing the festival with Beth Morrison Projects, and in partnerships with several other theaters where some of the performances will take place. Also new to the festival's schedule is a multimedia concert by Sky-Pony, an energetic Brooklyn indie band with a penchant for theatrical stagings and choreography. The group will perform Jan. 10-12 at Here. And Elizaveta, a singer-songwriter who was born in New York but grew up in Moscow and was trained as a classical pianist, will play a one-hour concert on Jan. 17 at Joe's Pub. The works that were announced earlier include the world premiere of "Thumbprint," a 90-minute work by the composer and singer Kamala Sankaram and the playwright Susan Yankowitz (Jan. 10-18 at the Baruch Performing Arts Center); "Paul's Case," by the eclectic composer Gregory Spears and the playwright Kathryn Walat (Jan. 8 to 13 at Here); Jonathan Berger's "Visitations," a pair of one-act operas with librettos by Dan O'Brien (Jan. 11-13 at Roulette) and concert readings of "Angel's Bone," a work in progress by Du Yun, with a libretto by Royce Vavrek (Jan. 12 and 15 at Trinity Church Wall Street).