But the trickle down effect of success that mainstream acts get matters.

In 2015, many of our mainstream acts survive because our standards are so low.

There were also some mainstream acts you might expect to get in on the action omitted.

But check the session musicians on many mainstream acts, and it's jazz names that crop up, as they always have.

The impact of SOAK, Walking On Cars, Hudson Taylor and Kodaline too that means there is room for less obviously mainstream acts.

But most shops were not so proactive when it came to supporting new acts and preferred to concentrate on mainstream acts and releases.

They were the first two American mainstream acts to have that house beat in their songs, whereas before, it was all hip hop.