xylophone--barred percussion instrument with bars made of wood
metallophone--barred percussion instrument with bars made of metal
glockenspiel--literally "bells that sing"; a small metallophone
mallet--the tool or stick used to play barred instruments
soprano--the highest female voice or instrument range
alto--the lower female voice or middle instrument range
tenor--the higher male voice
bass--the lowest male voice or instrument range
Staff--the five lines and four spaces that music is written on
Treble clef--the symbol that indicates higher pitches (right hand on the piano)
Bass clef--the symbol that indicates lower pitches (left hand on the piano)
Time signature--the notation at the beginning of a piece of music that indicates how many beats there are per measure and what kind of note gets one beat
bar line--the lines that divide music into measures
double bar line--indicates the end of a piece of music
measure--the space between two bar lines
Dynamics--how loud or soft the music is played
pianissimo--very soft
piano--soft
mezzopiano--medium soft
mezzoforte--medium loud
forte--loud
fortissimo--very loud
crescendo--gradually getting louder
decrescendo--gradually getting softer
Tempo--the speed of the music's beat
presto--very fast
allegro--quick and lively
andante--walking speed
largo--very slow
ritardando--gradually getting slower
accelerando--gradually getting faster
