This is what we found on Wikipedia regarding the CELTIC CONNECTIONS:

The Celtic Connections festival started in 1994 in Glasgow, Scotland, and has since been held every January. Featuring over 300 concerts, ceilidhs, talks, free events, late night sessions and workshops, the festival focuses on the roots of traditional Scottish music and also features international folk, roots and world music artists. The festival is produced and promoted by Glasgow Life. Donald Shaw, a founding member of Capercaillie, was appointed Celtic Connections Artistic Director in 2006.

At the core of the festival is the Education Programme, which sees thousands of school children attend free morning concerts experiencing live music ranging from Burns to spiritual and blues. Celtic Connections also continues to foster new and young talent through its Young Tradition and New Voices series of concerts, and through the Danny Kyle Open Stage competition.

Every night of the festival, once the concerts are over, the late-night Celtic Connections Festival Club runs through to the small hours of the morning. No programme is announced in advance, and the club is renowned for one-off collaborations between musicians appearing at the festival.