ALTERNATIVA: INVISIBLE.INEFFABLE.INEVITABLE This performance by two longtime San Francisco-based collaborators, dancer Kathleen Hermesdorf and musician Albert Mathias, caps a full week of technique, improvisation, and composition classes by the duo. Presented by the Dance Complex and New Movement Collaborative. April 23. $20-$25. Dance Complex, Cambridge. 617-547-9363, www.brownpapertickets.com

GRANT JACOBY & DANCERS Modern dance choreographer Jacoby (pictured) also mines jazz, ballet, and musical theater to craft stories in movement. His company presents three new works in a program that includes pieces by Brayton Dance and Brookline Academy of Dance. April 22-23. $15-$20. Green Street Studios, Cambridge. 617-775-5006, www.grantjacobyanddancers.com

ISLAND MOVING CO The Newport contemporary ballet troupe makes its debut at The Vets with “Moment to Moment,’’ a program performed to live music highlighted by two premieres: Bill Evans’s “For Nana,’’ with a score by Claudia Queen, and a new work by Mark Harootian. April 23. $60-$500. The Vets, Providence. 401-421-2787, www.islandmovingco.org

CAPE DANCE FESTIVAL SPRING EVENT The summer festival starts early with this fund-raising evening of modern dance. Paul Taylor Dance Company principal Michael Trusnovec and former Taylor star Annmaria Mazzini are featured in solos and duets, including the specially reconstructed “Vers la Glace,’’ a duet choreographed 30 years ago by James Kudelka, Margie Gillis, and her late brother, Christopher Gillis. April 23. $50. Wellfleet Preservation Hall, Wellfleet. 646-734-6338, www.wellfleetpreservationhall.org KAREN CAMPBELL

Karen Campbell can be reached at karencampbell4@rcn.com.