The baroque era was a great time of musical patronage all over Europe. It was especially good for Henry Purcell and George Frideric Handel, both of whom boasted kings and queens among their patrons. Both were Londoners too — Purcell was born there, Handel immigrated. Purcell’s birth in 1659 and Handel’s death in 1759 bookended a golden age in that city’s musical history. Tonight, Oberlin’s Baroque Performance Institute, which attracts music specialists from around the world, perform works by Purcell, Handel and Giuseppe Baldassare Sammartini, an Italian contemporary who adopted London as his home. Performers — all faculty members at Oberlin — include flautist Michael Lynn, violinist Marilyn McDonald, cellist/viola da gamba player Catharina Meints and harpsichordist Webb Wiggins. Showtime is at 8 p.m. at Warner Concert Hall (77 W. College St., Oberlin, 440.775.8044). Tickets: $10. — Michael Gill