Calibre 50 has the four-man formation of a rock band, with members on tuba and accordion joining a guitarist and drummer. Founded in 2010, the group has scored a string of Regional Mexican hits and, with Contigo, are destined for more. On "Tus Latidos," the banda group transcends the genre, leaving aside the more traditional oom-pa-pa for a more understated style. The track talks about a romance that blooms on social media. The young members of Calibre 50 may be from Sinaloa, the cradle of the brass banda sound, but on Contigo, it's clear they are not playing their fathers' music.