QUOTE(briantrumpet @ Dec 8 2009, 11:02 PM)

... I reckon that triangle is one of the harder ones to do well. I found myself playing triangle in a professional context in the William Tell Overture (with José Cura conducting), and sight-reading the traingle part was sooo difficult .... should I look at the music, the conductor, or the triangle, as it tried to spin round? Getting a triangle to make two pp notes ping exactly the same is not easy, to say the least. But I did find out how to do vibrato on a trangle: move a couple of fingers up and down inside the triangle after you've struck it. It works, though I think it might be wasted on the average audience member.
For someone with general musical experience who has not put a lot of time in on a particular percussion instrument, I still think that triangle is easier than most. Bass drum and suspended cymbal are easier, I grant, but all the difficulties you have in looking in three directions at once are worse on xylophone, glock, tubular bells, chinese blocks and vibes and these usually have parts that are more difficult to memorise. Snare drum rolls need lots of practice and I once saw a professional player getting repetitive strain injury in a piece by Steve Reich which required him to play an exotic instrument* whose name excapes me.
* For several minutes continuously, he had to rotate a handle which moved something inside a cylinder of length and diameter both about six inches. It made a high frequency rattling noise at medium dynamic. His arm and wrist got tired of twisting the handle and he failed to stay with the beat.
To stop a triangle rotating, ensure that the suspending loop makes a shallow V by spreading it at the top. Never try to play a roll at the open corner.