Hannan caught their gig at the ANU Refectory in May, "Higgie's energy and delivery is reportedly better than 'A1' class. Stuart Robertson unleashes guitar work which wasn't recorded on Wish List, while bassist Pat Hayes and drummer Pete Velzen have also been sharing some of the lead singing duties." The lead single from Wish List, "Lock It", peaked at no. 55 on the ARIA Singles Chart in February 1991. Hayes described how it was written, "Suzi did the majority of it. Like I did a bit, Pete did a bit, Stu did a bit and Suzi wrote a melody over it and tied it all together." Hannan declared that it "opened the door to a new audience for the four-piece band. The charming tone which Higgie's writing skills address the topic of early love in 'Lock It' extracts true emotion from the band... So often expressions of love interest can be over-the-top but the [group] couldn't put it in a more genuine manner in 'Lock It' – 'Christ, I really like you.'" The next single, "Jennifer", appeared in April 1991 with a five-track EP released in August 1992. The title track is dedicated to Higgie's sister, Jennifer Higgie. The EP reached the top 60 on the ARIA Singles Chart in September. The group followed with a European tour during 1991 and recorded their second album, Psychohum which was released in May 1992. Psychohum peaked at No. 35 on the ARIA Albums Chart – their highest-charting release. McFarlane opined that Psychohum was "harder edged" and "yielded three singles: the noisy, guitar-driven pop of 'Black Bandages' (May) and 'Incinerator' (September), plus the ballad 'A Winter's Tale' (March 1993)." Charles Miranda, also of The Canberra Times, felt that "It is a lot different to the band's first album, Wish List, having a more live, 'earthy' sound and flavour – from energetic heavy rock to soft vocaled love songs." They were named most popular independent act at the 1993 Australian Music Awards by local version of Rolling Stone. 1993–1997: Aerial and break up The group's third studio album, Aerial, was released in August 1993 and was produced by Paul McKercher. The group went to Kangaroo Valley, Higgie explained, "We took our studio with us and went to this amazing house in the valley for three weeks, then we mixed it down at a place called Megaphone in Sydney, so we're up to our third