In the beginning of the film, Jenny's fringe is neatly parted. As she becomes more and more involved with David, her fringe starts to descend until it is completely down. This shows she is now a part of his world. Then, as she starts to move away from him, her hair becomes parted again.
The school orchestra play an extract from Elgar's 3rd Symphony. This work was left unfinished at the composer's death in 1934 and was not completed and performed until 1998, so unavailable (and unsuitable) for a 1961 school orchestra.