Strongest, for her, was that of the bassoon, though she knew it to be a difficult instrument to play effectively.

No other fingers could quite compare with his mastery of that most difficult instrument.

The clarinet, which has been modified little over the last century, is one of the most exasperatingly difficult instruments to play.

The clarinet was a difficult instrument to master in any case, and after the mid-40's, there weren't many young musicians willing to make the effort.

It is a very difficult instruments to play.

The cornett is generally agreed to be a difficult instrument to play - it requires a lot of practice.

Today, few endongos are manufactured as it is considered one of the most difficult instruments to make.

The horn is often reckoned to be one of the most difficult orchestral instruments to master.

The sitar is generally considered a difficult instrument to learn.

"The Cannon is a difficult instrument to get a tone out of," she said.