Celtic Connections review: Transatlantic Sessions, Glasgow Royal Concert Hall

Musicians are often envied for their supposedly cushtie lifestyles and timetables – sleeping late; few hours’ work of an evening, in between all the jet-setting and partying – but Friday’s first night of Celtic Connections showpiece Transatlantic Sessions (reprised as ever yesterday, before embarking on a sellout six-date tour) culminated an intensive 12-hour shift for its 16-strong cast, following two previous days’ rehearsal.