In English, "to hear" is a passive act to the person. It happens to them, whether they wanted it to or not. "To listen" is an active effort by the person. "If one listens well, he will hear it." The Spanish dictionary says that "oir" is to hear. However, "escuchar" can mean "to listen" or "to hear". Is that correct?
"La escuché cantando" could mean "I listened to her singing" or "I heard her singing". ??
Is that right?
Thanks