Washington (ANI): Victoria Secret model Heidi Klum might have won hearts with her magnetic appeal, but she definitely hasnt mastered the art of singing a duet with her popstar husband Seal. According to the grapevine, Klum once grabbed a microphone to sing a duet with Seal at a fashion show, but she sadly regretted it, as she couldnt match her husbands perfect pitch. No more singing, I promise, I wont sing again, Fox news quoted Klum, as saying. Heidi doesnt want to sing again, the experience was really scary for her and particularly because of how good her husband Seal is, it just wasnt something she enjoyed, a pal said. However, Klum is back to doing what she does best, strutting her stuff as a Victoria Secret model and is preparing for a lingerie show in Miami.