1)
What is the meaning of "Ki Hitah Azno Li"?
1.
Malbim: This is like a father leans his ear to his only son - perhaps he will hear his voice, which is sweet to him, and he wants to hear his supplications.
2)
What do we learn from "uv'Yamai Ekra"?
1.
Rashi: In the days of my affliction I call to Him, and in the days of my salvation I praise Him.
2.
Radak: Every day I call to Him, and not to anyone else for help.
3.
Malbim: Also in good times, I called and prayed to Him.