| Answer | Crossword Clue |
|---|---|
| ECG | Heartbeat recording: Abbr. |
| ECG | Heartbeat record: Abbr. |
| EKGS | Heartbeat recordings: Abbr. |
| ECG | Heartbeat chart (abbr.) |
| MIC | Recording abbr. |
| RECSEC | Recording secretary: Abbr. |
| EEG | Brain wave recording: Abbr. |
| EEG | Graph recording brain activity: Abbr. |
| RIAA | Recording industry trade organization (abbr.) |
