Hi Margarita, Irish sessions will differ in style, personality, tastes, some love to do more slow airs some love reels & never come up for air while some others like to do more of a Micheal Coleman or Ed Reevey type style while others love to toss in a good dose of Scottish &/or Canadian Maritime, some like it hot & some slower & easier just the same way that some of the old timers still come dressed in tie & jacket & play in a straight old fashion way with rhythm paino. In Providence, Rhode Island (where the harmonies would be going through the roof) awhile back you'd find members of the group Touchstone along with other local phenomenona like Skip Healy on flute & Mance Grady on drum playing sessions that one would consider cutting edge today even though it maybe 15 years later. Altan's Mark Kelly plays his rhythm guitar like a lead or harmony instrument in the circle of others, listen to the way Dave Swarbrick will play sometimes, each time through the tune he'll change up the style then maybe the phrasing then maybe from 3/4 to 6/8 timing this happens in sessions too depending on the sessions when I played in San Francisco sessions many years ago there were a bumper crop of great concertina players some you'd swear were pipers playing with the drones while others were playing the harmony lines behind. Though a good bit of the Irish sessions may play "note for note" there are others sessions that like to spice up their life. Barry