As in the regular repeat, the number over the repeat indicates how many times the 2 measures are to be repeated. The most common type of repeat if the Multi-Measure Repeat . If there is a bracketing repeat, the measures repeated are those within the two repeat brackets. Unless indicated, thes repeats are taken only once. It is not uncommon to have a repeat within a longer piece of music - this saves on time writing out repeated notes.
Exercises commonly have a multi-measure repeat at the end.
This indicates that the exercise can be repeated ad infinitum to build chops. Tie The tie indicates that the two notes tied together are played as one. Thus, two tied quarter notes would be played like a half note. This is commonly done across bar lines and when linking notes of different values. This is common in funk and jazz notation.