It doesn’t feel like Tegan and Sara have been performing for almost two decades—but that’s less a commentary on the passage of time and more a testament to an act whose artistic evolution has rendered them ageless.
Since the Canadian-born indie-pop sisters appeared as teenagers alongside fellow female-led stalwarts like Luscious Jackson and The Pretenders at 1999’s Lilith Fair, the duo has evolved from an inventive acoustic act (featured on its debut, “Under Feet Like Ours”) to one whose singer/songwriter-crafted message can be contorted into varied styles.
Starting with 2007’s “The Con,” the identical twins showed a willingness to transition from their early Lilith-appropriate material toward synth-accented cuts, glittery beats and clap-inducing tracks more appropriate for a dance club than an Ani DiFranco appreciation hour.
But to celebrate the 10th anniversary of the aforementioned evolutionary album, the Quin siblings are rolling things back to the beginning. On their “The Con X: Tour,” they’ll deliver reworked acoustic arrangements of the release’s songs in order, as well as other tunes that have propelled the pair onto an impressive pedestal, influencing artists of all genres.
Tegan and Sara with Japanese Breakfast: 8 p.m. July 29 in Town Ballroom (681 Main St.). Doors are at 7 p.m. Tickets are $35 (box office, Ticketfly).