For all their noise and bluster, the Mighty Mighty Bosstones can get mighty mighty sentimental. Opening night of the band’s 15th Hometown Throwdown on Saturday was as much a love letter to Boston and its music scene as it was ska-core blowout.

The once hard-touring Bosstones now just perform a handful of gigs annually, with the seasonal Throwdowns being the highlight. This year the band staked out three shows at the House of Blues, with the finale scheduled for tonight. Each show offers different opening acts and unique set lists, all delivered with flair, starting with an introduction by a trio of guitar, banjo, and conga belting out the Bosstones’ “Riot on Broad Street.”