By late 1990, David Dyson assumed the role of musical director. In early 1992, the group released the stand-alone single "If You Go Away", the only new track on the compilation "H.I.T.S.". The song peaked at No. 16 on the US charts and No. 9 in the UK charts. Meanwhile, as the music industry was still reeling from the Milli Vanilli lip-syncing scandal, the group found themselves accused of lip-syncing by Gregory McPherson, also a music teacher at Berklee College of Music, who was listed as an associate producer and string arranger on the group's third album, "Step by Step". McPherson alleged that Maurice Starr sang the vocals while the group lip-synced to pre-recorded vocals during their live performances. McPherson also filed a breach of contract and creative infringement lawsuit against Starr.