Solutions The lowest female singing voice has 7 entries with similar clues

• 4-letter words
• bassAdult male singing voice from lowest pitch to highest
• altoAdult male singing voice from lowest pitch to highest
• 5-letter words
• tenorAdult male singing voice from lowest pitch to highest
• 8-letter words
• baritoneAdult male singing voice from lowest pitch to highest
• 13-letter words
• mezzo-sopranoFemale singing voice from lowest pitch to highest
• 14-letter words
• basso-profundoAdult male singing voice from lowest pitch to highest
• 15-letter words
• or-countertenorAdult male singing voice from lowest pitch to highest