A little curved line between two notes
A tie is a musical symbol used to connect two notes of the same pitch, indicating that they should be played as a single, sustained note. The tie appears as a curved line (typically horizontal) extending from the head of the first note to the head of the second note.
The purpose of the tie is to join two notes of the same pitch together, creating a sustained sound instead of separate attacks. This means that the first note is not played again but sustained until the second note is sounded. Ties can span across bar lines and time signatures, creating a smooth connection between the notes.
Ties are commonly used in melodies or harmonies where there are consecutive notes of the same pitch. They can extend the duration of a note, creating a smoother and more legato effect, and avoiding any interruption between the repeated notes.
In sheet music, ties are typically indicated by a curved line spanning the heads of the connected notes. The line should be smooth and close to the note heads, indicating that the two notes are connected and should be played as one sustained note.