Post by l***@altavista.comThank you both, Steve Latham and Hans Aberg, for your explanation. But
this makes me wonder about tremolo as played by strings. Here the
movement is also very fast, but the bow speedily changes directions.
In this case, is an attack present in the notes which follow the
first?
Caution here Lavron, there's two types of tremolo on strings: bowed and
fingered - and there may be a "hybrid" form we might call "undulating".
A tremolo should really be, by definition, the same pitch repeated. And yes,
in that sense, strings and everyone else produce a new attack for each note.
However, strings can play repeated notes under the same bow, called loure,
where really it's a solid note with breaks in it - so it should be
"non-articulated" - this is written as repeated pitches with staccato dots
over the notes and a slur over the group.
A trill should really be, by definition, two pitches in alternation.
We know that C C C C C C is a tremolo. On strings this would have to be
played with alternate bowing.
C D C D C D is a trill - usually, even on strings, only the first note is
attacked - thus for strings it's under one bow (unless it's very long, etc.)
C Eb C Eb C Eb has been called - wait for it - a tremolo! Argggh. It really
isn't (and a tremolo bar or tremolo bridge on a guitar isn't either!). But
they ended up calling it a "tremolo" - maybe because the same motion might
have been used to produce it, or, especially on Piano where a single pitch
tremolo is somewhat cumbersome, this was the closest thing a pianist could
do. Really C Eb C Eb C Eb belongs in the "trill" family.
Nonetheless, the names have stuck, so in strings, rapid alternation of two
pitches that are more than a M2 apart is called a fingered tremolo. These,
like trills, are usually played under one bow.
A Bowed tremolo for strings is usually understood to be what would be a
standard tremolo (or fluttertongue for flute, etc.) for other instruments -
single repeated pitch.
Then the "undulating" tremolo would be one found on adjacent strings. It can
be played under one bow or with alternating bow, but by nature one would
have to bow slower anyway.
Best,
Steve