William "Poogie" Hart, the lead singer and songwriter for The Delfonics who was one of the major forces in that

Philadelphia sound that established the 1960s and the '70s was pronounced dead on Thursday at the age of 77. The

singer is regarded for being one of the greatest fakettos of the day, Mr. Hart's vocals and lyrics were the basis for

many of the genre's biggest songs, such as "La-La (Means I Love You)," "Didn't I (Blow Your Mind This Time)," and "

Ready or Not Here I Come (Can't Hide from Love)." William Hart is the lead vocalist of the smash-making Philly Soul

group the Delfonics died on Thursday in the Philadelphia hospital due to complications after surgery. He

was 77. Hart was well-known to his the public and his fans as Poogie was the founding member and chief songwriter

for the group. He was one of the most pure falsettos of the Philadelphia-based soul music of the 1960s and

early 1970s. His heartfelt, aching tones were evident in the group's most famous hit songs "La-La Means I Love

You" (1968) and the most memorable of them all"Didn't I Blow Your Mind This Time" (Grammy "Didn't I Blow Your Mind This Time