Mom's birthday

It was my mother’s birthday this Wednesday.
My brother, surprisingly, went home from his University.  As a student of the subject of engineering, life is really tough and busy.  There are loads of homework and frequent examinations.  It was really happy for me to see that he was back.  I took this precious chance to have a chat.
After having the dinner, at about 9 o’clock, we had the birthday cake that was selected by my brother.  Few hundred megabytes of videos and photos were taken.
The birthday present I chose for mom is a a power adapter of an electric piano that has existed for years at home.  Three years ago, the power adapter of the piano was lost.  No one had ever used the piano again.  I am a guitar player, so is my dad.  I appreciate to see the establishment of a mini band in home.  Dad and I shall be the guitar player.  Mom will be the rock pianist.  There will be much fun.  To encourage my mom to play piano, I bought the adapter.
There is another reason I give the adapter as a present.  According to scientific report, people who play instruments will have a longer life expectancy.  This is because music player may express their feeling through instruments.  They are more likely to face a problem and solve it.  As a result, they will have better life.
Birthday is a happy and a sad day.  Birthday means the end of previous year and the start of another year.  However,  birthday, in a pessimistic point of view, is a year lost in the countdown of life.